8th Grade Math Chapter 5 Test Review

What does Y equal

100

If X=3, What does Y Equal

y=x+4

y=3+4

y=7

200

If x= -1, What does Y Equal

y=2x

y=2(-1)

y=-2

300

If X=2, What does Y Equal

y=2x-4

y=2(2)-4

y=4-4

y=0

400

If X=5, What does Y Equal

2y=x+7

2y=5+7

2y=12

y=6

500

If X= -1, What does Y Equal

-y= -3x+9

-y=-3(-1)+9

-y=3+9

-y=12

y= -12

What does X equal

100

If y=4, What does x Equal

y=x+1

4=x+1

x=3

200

If y=2, What does x Equal

y=2x

2=2x

x=1

300

If y=8, What does x Equal

y=3x-1

8=3x-1

9=3x

x=3

400

If y= -6, What does x Equal

y= -x-1

-6=-x-1

-5=-x

x=5

500

If y= -18, What does x Equal

y=6x-3x

-18=6x-3x

-18=3x

x= -6

y=mx+b form

100

Mrs. Bush drinks 2 cups of water to begin her day, then drinks 1 cup every hour. What is the equation in y=mx+b format? Let x equal hours.

y=1x+2

200

A bean stalk was planted in the ground when it was 3 feet tall. It grows 0.5feet every week. What is the equation in y=mx+b format? Let x equal weeks.

y=0.5x+3

300

Put this equation into y=mx+b format (find y)

10x-5y=15

y=2x-3

400

Put this equation into y=mx+b format (find y)

3y-2y=4x+4x-2

y=8x-2

500

Put this equation into y=mx+b format (find y)

3x-2+1y=2x+8

y= -1x+10

Equal Values Method

100

Find the values of x and y using equal values method

y=2x+1

y=3x-4

x=5

y=11

200

Find the values of x and y using equal values method

y=1x+1

y=2x-5

x= 6

y=7

300

Find the values of x and y using equal values method

y=3x-2

y=5x+8

x= -5

y= -17

400

Find the values of x and y using equal values method

2y=2x+4

3y=6x-9

x=5

y=7

500

Find the values of x and y using equal values method

2y=4x-3+1y

2y=10x+6

x= -6

y= -27

MATH

100

7(-6)

-42

200

1926 ÷ 6

321

300

18 + 27 + 1234 

1279

400

896,427 - 4,573

891,854

500

5464 ⋅ 98

535,472