8th Grade Math Review

Solving Equations

100

Solve for x. x + 2 = -5

 -7

200

13x = 26

 2

300

Solve for x. 3(x + 2) = 12

2

400

Solve for x. 2(x + 2) = 6

1

500

Solve for x. 9x - 7x - 5 = 17

11

Systems of Equations

100

The solution to the system of equations: r + s = -6.   r - s = -10

(-8,2)

200

The solution to the system: 

  x = 4y 

 2x + 3y = 22

(8,2)

300

Solve the system x + y = 104.

x - y = 68 

86 and 18

400

The solution to the system of equations: 

y = x - 3 

2x + y = 17

What is (4, 1)

500

The solution to the system of equations:

 y - 3x = 3 

y = 3x - 2

NO SOLUTION

Transformations

100

Dilate the point (2,3) by a scale factor of 4

What is (8,12)

200

The point A = (4, 2) was translated up 5 and to the right 4. What are the coordinates of A'?

What is (9, 7)

300

The coordinates of A are (2, 5). The coordinates of the point A' once A has been reflected over the x-axis.

What is (2, -5)

400

Triangle ABC was reflected over the x axis and translated 2 units right. Which property is not preserved?

 A) Size

 B) Shape

c) Angle Measure 

D) Orientation

D) Orientation

500

Triangle ABC has coordinates (2,3), (-4, 6) and (-1,5). The coordinates of A'B'C' after a dilation with scale factor 2.

What is A(4,6), B(-8,12), C(-2,10)

Slope

100

The slope of the line connecting (2,4) and (-2, -5)

What is 9/4

200

The equation with a slope of 3 and a y-intercept of 4

What is y = 3x + 4

300

The y-intercept of 3x + 6y = 12

2

400

The slope of the line 3y = 2x + 5

What is 2/3

500

Determine the solution to the system 

y = 3x - 3 

y = 3x + 3

No Solution

Mixed

100

Simplify the expressions 

2x- 5(x² - 7) + x²

-4x² + 2x + 35

200

Solve x² = 100

x = 10 and x = -10

300

Write .000234 in scientific notation

2.34 X 10^-4

400

Determine the length of one side of a right triangle is the hypotenuse is 10 feet and one leg is 8 feet. 

6 feet

500

If x= -2 and y = 4 then evaluate 3x² - 3y

0