8th grade Review

System of equations

100

4x+3=y

7x+9=y

Solve for x and y 

x=2

y=11

200

Solve for x and y 

6x+12=y

3x-14=y

x=2.88

y= 29.33

300

Solve for x and y 

8x+14=y

9x-20=y 

x=34

y=286

400

solve for x and y 

20x+5=y

12x-12=y

x=0.53

y= 15.625

500

solve for x and y 

8x+10=y

9x+7=y

x=3

y=34

Equations

100

Solve 

7x+3=21x-2

5/14 or 0.357

200

Solve

6x+3=5x-20

x=-23

300

solve

12x-3= 6x+32

1.611

400

solve

6x-2=9x+12

.66

500

Solve

15x+20= 15x-4

impossible

0x=24

Exponents

100

5⁴x5¹²

5¹⁶

200

7⁹/7²

7⁷

300

(6⁴)⁵

6²⁰

400

1/4³

4^-3

500

5³x4³

20³

Slope

100

Find the Slope between the two points below

(3,4) and (6,12)

8/3

200

Find the Slope between the two points below

(5,4) and (10,9)

5/5 =1

300

Find the Slope between the two points below

(6,3) and (-2, 6)

3/-8

400

Given the equation what is the slope?

y=4x+7

4

500

Given the equation what is the slope? 

8x+2x-5= y

10

Pythagorean Theorem

100

Find C

A= 4 B=5

6.40

200

Find c

A= 12 B=13

c= 17.6

300

find C if 

A= 2 B=5

c= 5.38

400

find A if 

B= 5 C=9

A=7.48

500

find B if 

A= 8 C= 12 

B=8.94