Review Sheet B:  Substitution and Solving Inequalities - Chapter 10
Simplify the following expressions using substitution. 1.  4x when x = -5 4(-5) = -20 2.  x 2  when x = -7 (-7) 2  = 49
3.  -x 2  + 5 when x = 6 Simplify the following expressions using substitution. -(6) 2  + 5= -31 4. x 2  - 3x when x = -9 (-9) 2  - 3(-9)= 108
5. x 2  + 8x - 6 when x = 4 Simplify the following expressions using substitution. (4) 2  + 8(4) - 6 = 42
Solve the following one step inequalities. 6.  x - 8 > 7 +8  +8  x > 15 7. -  x  < -6 3 •  -3  •-3  x > 18
Solve the following two step inequalities. 8.  9x - 7 ≥ 56 +7  +7 9x ≥ 63 ÷9  ÷9 x ≥ 7  9. 10 ≥ -x + 8 - 8  - 8 2 ≥ -x ÷-1  ÷-1 -2 ≤ x
Graph the following inequality. 10.  x + 2 > 6 -2  -2 x > 4

Review Sheet B Substitution And Solving Inequalities

  • 1.
    Review Sheet B: Substitution and Solving Inequalities - Chapter 10
  • 2.
    Simplify the followingexpressions using substitution. 1. 4x when x = -5 4(-5) = -20 2. x 2 when x = -7 (-7) 2 = 49
  • 3.
    3. -x2 + 5 when x = 6 Simplify the following expressions using substitution. -(6) 2 + 5= -31 4. x 2 - 3x when x = -9 (-9) 2 - 3(-9)= 108
  • 4.
    5. x 2 + 8x - 6 when x = 4 Simplify the following expressions using substitution. (4) 2 + 8(4) - 6 = 42
  • 5.
    Solve the followingone step inequalities. 6. x - 8 > 7 +8 +8 x > 15 7. - x < -6 3 • -3 •-3 x > 18
  • 6.
    Solve the followingtwo step inequalities. 8. 9x - 7 ≥ 56 +7 +7 9x ≥ 63 ÷9 ÷9 x ≥ 7 9. 10 ≥ -x + 8 - 8 - 8 2 ≥ -x ÷-1 ÷-1 -2 ≤ x
  • 7.
    Graph the followinginequality. 10. x + 2 > 6 -2 -2 x > 4