Mathematics Middle School

Please plot this linear equation on a graph, and also explain how to plot it.
[tex]y=3x-7[/tex]

Answers

Answer 1

Answer:

See below:

Step-by-step explanation:

Hello! I hope you are having a nice day.

We can solve this equation in a single step, we just need a bit of theory and a graph.

We can first see that its in [tex]y=mx+b[/tex] form. Which is also known as Slope-Intercept form.

This means that we know the following.

[tex]b[/tex] is the y coordinate of the y intercept.[tex]m[/tex] is the slope of the line.

Since we know that, we can see that from our equation that the slope of the line is 3 and the y intercept is (0,-7).

Now that we've gotten that, we can start graphing.

The y intercept is -7 so we can plot (0,-7) as one of our points.

The slope of 3 means that we got up 3 units then right a single unit.

Therefore, another point could be (1,-4).

With our two points, we can create our graph by creating a straight line through those two points and therefore plotting our line.

Cheers!

Please Plot This Linear Equation On A Graph, And Also Explain How To Plot It. [tex]y=3x-7[/tex]
Answer 2

Answer:

Step-by-step explanation:

y = 3x - 7 is a linear equation with y-intercept -7 (or    (0, -7)   ) and slope 3.  These two quantities are instantly readable from the equation.

There are several ways in which we may graph this equation.  One is to plot the y-intercept (0, -7)  Then choose an x-value, such as 3, and evaluate the function at that x value.  We see that y = 9 - 7, or y = 2, when x = 3. Then another point on the graph besides (0, -7) is (3, 2).  Plot (3, 2) and then draw a line through the two plotted points.

Here's another way:

The slope here is 3, or 3/1, which represents rise / run.  Plot (0, -7) as before.

Move your pencil from (0, -7) 1 space to the right and 7 spaces up.  Then plot a new point at that location.  Draw a line through (0, -7) and (1, 0).

Related Questions

A holiday meal cost $12.50 a person plus a delivery fee of 30$. Which equation is right?

1. y=30+12.50x
2. y= 12.50+30
3. 12.50x=30
4. y=12.50+30x

Answers

Answer:

1. y = 12.50x + 30

Step-by-step explanation:

A holiday meal cost $12.50 a person plus a delivery fee of 30$

Let x = number of people ordering a meal and y = total cost

It cost 12.50 per person so the cost regarding the number of people that orders food can be represented by 12.50x.

There is also a $30 delivery fee.

So the total cost would (y) = 12.50x + 30

The answer would be 1. 12.50 and 30 just swapped places.

y=12.50x= 30
i’m not sure if i’m wrong or right

Match the phase on the left with the right algebraic expression on the right .

Answers

Answer:

7 ÷ 1/4 = 7 × 4

2/3 ÷ 4/5 = 2/3 × 5/4

4/5 ÷ 3/2 = 4/5 × 2/3

1/4 ÷ 1/7 = 1/4 × 7

Answer:

Green is with C, Blue is with A, Orange is with D, Purple is with B

Step-by-step explanation:

Hi!

So, it's been a while since I've done math like this, so the way I solved this was simply by doing the equations themselves and seeing which one matches. I'm sure there is an algebraic way to find which ones match, but this is all I know how to do :)

(By the way...I got the decimals by doing the fraction itself. 1 divided by 4(1/4th)=.25, as an example)

1(left)-7/1/4 is the same as 7/ .25. This is 28.

2(left) 2/3/ 4/5 is the same as .6666666/ .8. This is .83333repeating

3(left) 4/5 / 3/2 is the same as .8/1.5. This is .53333repeating

4(left) 1/4 / 1/7 is the same as .25/.143. This is 1.74(approx.)

1(right) 2/3 x 5/4 is the same as .66666 x 1.25 This is .8333 approx.

2(right) 1/4 x 7 is the same as .25*7. This is 1.75

3(right) 7*4 is 28.

4(right) 4/5 x 2/3 is the same as .8x.66666. This is .533

Now, we can match.

Green is with C.

Blue is with A

Orange is with D

Purple is with B

Hope I could help!

Dr. McGee saw 1,007 patients this year, which is 90% higher than the number he saw
last year. How many patients did Dr. McGee see last year?


Please help! Will put Brainiest!

Answers

Answer:

107 patients

Step-by-step explanation:

This year Dr. McGee had 1007 patients act like this is 100%. 10% of 1007 is 107 and since there was a 90% increase 107 is the answer

Help pls ASAP! i really need help!

Answers

Answer:

76-24= 52

Explanation:

76
24
-___
=52
If u take 24 away from 76 the answer is 52 this is the biggest gap u can have with these numbers

(PLEASE HELPP) The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11, while the number of 5th graders to that of the 6th graders was 13 to 9. By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?

Answers

Answer:

The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.

Step-by-step explanation:

I am going to say that:

x is the proportion of 5th graders.

y is the proportion of 6th graders.

z is the proportion of 7th graders.

The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11

This means that:

\frac{y}{z} = \frac{4}{11}

z

y

=

11

4

So

11y = 4z11y=4z

y = \frac{4z}{11}y=

11

4z

The number of 5th graders to that of the 6th graders was 13 to 9.

This means that:

\frac{x}{y} = \frac{13}{9}

y

x

=

9

13

9x = 13y9x=13y

x = \frac{13y}{9}x=

9

13y

All of them is 100%

This means that:

x + y + z = 1x+y+z=1

We need to find z.

y = \frac{4z}{11}y=

11

4z

x = \frac{13y}{9} = \frac{13*4z}{9*11} = \frac{52z}{99}x=

9

13y

=

9∗11

13∗4z

=

99

52z

Then

x + y + z = 1x+y+z=1

\frac{52z}{99} + \frac{4z}{11} + z = 1

99

52z

+

11

4z

+z=1

The lcm(least common multiple) between 11 and 99 is 99. Then

\frac{52z + 9*4z + 99z}{99} = 1

99

52z+9∗4z+99z

=1

187z = 99187z=99

z = \frac{99}{187}z=

187

99

z = 0.5294z=0.5294

By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?

z(7th graders) is 52.94%.

x + y(5th and 6th graders) is 100 - 52.94 = 47.06%

52.94 - 47.06 = 5.88

The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.

A diving board is 12 feet above the ground. The bottom of the pool is 16 feet below the ground. Write and solve an equation that gives the distance from the diving board to the bottom of the pool.

Answers

Answer:

28 ft

Step-by-step explanation:

since we're trying to find the distance between them you have to add 12 and 16 to get 28 and it tells how many feet the distance is between the bottom of the pool and the diving board

Answer:

28 feet

Step-by-step explanation:

To find the distance between them, add 12 and 16 to get 28, it tells how many feet the distance is between the bottom of the pool and the diving board.

The total length of fabric needed is 375 m.

65% of 375 meters can be written as 0.65× 375 m = 243.75 m

The length of fabric still needed is 375 m − 243.75 m =

___m

Answers

Answer:

375 - 243.75 = 131.25

Step-by-step explanation:

The length of fabric still needed is 131.25 m.

Hope this helped!

What is the greatest common factor of 70 and 33?

Answers

Answer: 1

Step-by-step explanation: 1 is the greatest common factor of 70 and 33.

1 is the greatest number that 33 and 70 divides into.

A recipe for 1 batch of cookies uses 5 cups of flour and 2 teaspoons of vanilla.

Complete the double number line diagram below to show the amount of flour and vanilla needed for 1,2,3,4, and 5 batches of cookies. MAKE SURE YOU FILL OUT THE DOUBLE NUMBER LINE COMPLETELY! Then use the double number line to answer these questions:



a) If you use 20 cups of flour, how many teaspoons of vanilla should you use?

b) If you use 6 teaspoons of vanilla, how many cups of flour should you use?

Answers

a) 8 because 5.4=20 so 2.4=8
b)2.3=6 therefore you should use 15 of four ( 5.3=15)

Use a model to solve 13 x 4/9 . Leave your answer as an improper fraction.

Answers

The answer to your question is 52/9

Please help :) Thanks!

Answers

Answer:

Hi there!!

Since this is a positive slope, so we can use 3/1=3

The slope is 3

The slope is positive so you can use 3/1 witch means the slope of the graph is 3.

Dylan started to write the expanded form of 3,687.89 as shown below.
3×1,000+6×100+7×1+9×(1100)

Which of the following does Dylan need to include to correctly complete the expanded form above?
A.
8×100+8×(1100)
B.
8×100+8×(110)
C.
8×10+8×(110)
D.
8×10+8×(1100)

Answers

Answer:

Answer: A. 8×100+8×(1100)

Step-by-step explanation:

before removing the 0 from 1000, we got to add 100 and 1,000. then we remove the 0.

hope this helped.

−2.4(m−2/3)=−9
Please help! I can't figure it out!

Answers

Answer:

−2.4(m−2/3)=−9  First you do the problem inside the parenthesis. Then figure out the answer for that and then -2.4 with whatever the answer was. then you will have the answer

Step-by-step explanation:

hope this hels

Answer: 4.416 (the 6 should have a line on top to show it goes on)

Step-by-step explanation:

pls help will mark brainliest

Answers

Answer:

Answer and

Step-by-step explanation:

equation are attached

You gotta play Baldi’s basics

helppppp !!!!!!!!!! FAST !!!!!!!!!!!!!!

Answers

Answer:

The scale of the map is 20cmx30cm

The dimensions of the garden is 6cm for width and 20 cm for the length

Step-by-step explanation:

Answer: the scale of the thing is  20cm x30cm

Need help will give brainleist

Answers

A because you would have to multiply 5x2x8x10

Answer:

B 5*2*8

Step-by-step explanation:

To calculate the volume multiply the 3 dimensions together. you don't use the diagonal.

A right triangle has sides of length 3, 4, and x. Find x if it is the hypotenuse.

HELP ME PLEASE

Answers

Answer:

5

Step-by-step explanation:

The rules for the hypotenuse is side a^2+side b^2=hypotenuse^2

a=3

b=4

3^2=9

4^2=16

9+16=25

5^2=25, so 5 is the hypotenuse.

:)

What is the value of m?



13.78 – m = 9.13

Answers

Answer:

4.65

Step-by-step explanation:

13.78 - m = 9.13

13.78 - 9.13 - m = 0 (subtracting 9.13 from both sides)

m = 13.78 - 9.13  (adding m to both sides)

m = 4.65

Answer:

m=22.91

Step-by-step explanation:

13.78+9.13=22.91

HELP ME PLZZZZ. I don’t know!!

Answers

Answer:

w=-6

Step-by-step explanation:

-2(-6)>-4

12>-4

This is true.

w=2 it’s the last one just divide -2 under -4

Calvin digs a hole at a steady rate of 1(1)/(3) feet every hour.
Consider ground level to be 0 .
What value represents the elevation of the hole relative to ground level after digging for 2(1)/(2) hours?
Enter your answer as a simplified mixed number in the box.

Answers

Answer:

3 1/3 feet

Step-by-step explanation:

Ok so, he digs 1 1/3 feet every hour. And we're trying to find out how much he digs in 2.5 hours. We can simply multiply 1 1/3*2.5 giving us 3 1/3 feet.

Hope this helps :)

Easy work for extra points

Answers

This ain’t easy for me

Answer:

i dont know

Step-by-step explanation:

Mrs. Parker has a small garden in her backyard. The total area of her garden is 3.5 square meters. The length is 5 meters.


What is the width of Mrs. Parker’s garden?
A.
0.7 meters
B.
70 meters
C.
0.07 meters
D.
7 meters

Answers

Answer:

B. 0.7

Step-by-step explanation:

3.5/5=0.7

A! If you work backwards, 5*0.7=3.5 or 3.5/5=0.7

Bob's pluming charges $25 per hour plus a service fee of 40$ for coming out to your house. Which equation is right?

1. y=25x
2. y=25x+40
3. y= 40x+25
4. y=25x-40

Answers

Answer is y=25x+40
Because for x hours it takes bob to finish the you pay 25$

Compare.

A. <
B. >
C. =
D. cannot be solved

Answers

well, change 15/4 into a decimal, 3.75. And now, we can see which is greater. Considering the wholes, 2 and 3,   3 is greater than 2, so it would be 2.2 < 15/4.

So, basically A I think.

It’s A. <
No 15 over 4 is more than 2.2!
Hope this helps

A. 6 m
B. 9 m
C. 12 m
D. 15 m

Answers

I think this would be 12
The correct answer is 15m

Pls help me with this math.

Answers

Michael made the first error when he did not do +10 on both sides in step 2 (he did not change the sign of -10 to +10 on the right side).
Micheal made the first error you can make sure by doing 186261 divided by 3

Car A is traveling east at a steady speed of 45 miles per hour. After 2 hours, it is 130 miles east of Johnstown
Car B is traveling east on the same road. it’s distance east of Johnstown is represented by the graph.


Where were the two cars in relation to each other when they began traveling?
A. Car A was 20 miles east of Car B
B.Car B was 20 miles east of Car A
C.Car A was 10 miles east of Car B
D.Car B was 10 miles east of Car A

Answers

Answer:

B

Step-by-step explanation:

The distance if you look at the graph has started on 20 so that will be it when they drive

your answer would be b

Answer The Volume Of The Rectangular Prism Please...

:) Thank You

Answers

Answer:

105 in^3

Step-by-step explanation:

V=whl

Volume = width x height x length

Volume = 3 x 5 x 7

Volume = 15 x 7

Volume = 105

105^3 is the answer

Please Answer this question

Answers

The answer is C because you have to add all of the blocks and then multiply by 3 for being the length of the blocks

Which fraction and decimals forms match the long division problem?

Answers

Answer:

A

Step-by-step explanation:

the numerator always goes into the dividend, and in this case the dividend is 7, so 7/9 is correct rather than 9/7. and the decimal form is 0.7777777+ it is not 0.7 because the question keeps adding zeros when the whole number is supposed to be 7, not 7.000. hope that helps.

The answer is A because when you divide the numerator in to the denominator you get what you have there so 7 divide 9 is equal to 7/9!
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