Review Sheet A: Substitution and
Solving Inequalities - Chapter 10
Review Sheet A: Substitution and
Solving Inequalities - Chapter 10
Simplify the following expressions using substitution.
Simplify the following expressions using substitution.1. 5x when x = -81. 5x when x = -8
5(-8) =
5(-8) =
-40-40
2. x2 when x = -92. x2 when x = -9(-9)2 =
(-9)2 =
8181
3. -x2 + 7 when x = 53. -x2 + 7 when x = 5-(5)2 + 7=-(5)2 + 7=-18-18
4. x2 - 8xwhen x = -64. x2 - 8xwhen x = -6(-6)2 - 8(-6)=(-6)2 - 8(-6)= 8484
Simplify the following expressions using
substitution.
Simplify the following expressions using
substitution.
5. x2 + 4x - 1 when x = 35. x2 + 4x - 1 when x = 3
(3)2 + 4(3) - 1 =(3)2 + 4(3) - 1 = 2020
Simplify the following expressions using substitution.
Simplify the following expressions using substitution.
Solve the following one step inequalities.
Solve the following one step inequalities.
6. x - 9 > -46. x - 9 > -4+ 9 +9 x > 5
7. x < -7 -3• -3 •-3
x > 21
Solve the following two step inequalities.
Solve the following two step inequalities.
8. 6x - 8 ≥ 468. 6x - 8 ≥ 46
+8 +86x ≥ 54÷6 ÷6X ≥ 9
9. -5 ≥ -x - 6+6 +61 ≥ -x
÷-1 ÷-1-1 ≤ x
Graph the following inequality.Graph the following inequality.
10. x + 5 > 1010. x + 5 > 10-5 -5
x > 5