Math Grade 9 - Equations and Inequalities

Find the value of x!

3(x-4) = -3

• 3

• -3

• 5

• -5

Which equation has x =2 as a solution?

• 3 + x = 10

• 4x = 32

• 5x =25

• 11 + x = 13

Find the value of n!

n+2 = -14-n

• 6

• -6

• 8

• -8

Solve for (x,y)

5x + y = 9

10x − 7y = −18

• (-4,-1)

• (4,1)

• (-1,-4)

• (1, 4)

Christian had brochures printed for a new business venture. Christian originally ordered 4 boxes of black-and-white brochures and 3 boxes of color brochures, which cost a total of $134. After those ran out, Christian spent $120 on 3 boxes of black-and-white brochures and 3 boxes of color brochures. Which simultaneous equations represent this situation?

• x+y=134

  x+y=120

• 4x+3y=134

  3x+3y=120

• 3x+3y=134

  4x+3y=120

• 7xy=134

  6xy=120

Solve:

3x + 2y = 15

7x + 2y = 19

• x = 1

  y = 6

• x = 1

  y = -6

• x = -1

  y = 6

• x = -1

  y = -6

When graphing b < 6 would you use an open or closed circle?

• Open

• Closed

Solve:

2x + 5 <  3x - 6

• x < 11

• x > -11

• x < -11

• x > 11

Pick the correct inequality!

• A

• B

• C

• D

Find the value of a!

19  + a  =  -50

• -950

• -31

• -69

• 69