Exercise 12 Page 168

Practice makes perfect

a By substituting y=2 into the inequality, we can check whether the inequality holds true.

3y-8>22

y= 2

3( 2)-8? >22

6-8? >22

Subtract term

-2≯ 22 *

A negative number cannot be greater than a positive number. Therefore, y=2 is not a solution to the inequality.

b By substituting y=0 into the inequality, we can check whether the inequality holds true.

3y-8>22

y= 0

3( 0)-8? >22

Zero Property of Multiplication

- 8≯ 22 *

Again, a negative number cannot be greater than a positive number. Hence, y=0 is not a solution to the inequality.

c By substituting y=5 into the inequality, we can check whether the inequality holds true.

3y-8>22

y= 5

3( 5)-8? >22

15-8? >22

Subtract terms

7≯ 22 *

Since 7 is not greater than 22, y=5 is not a solution to the inequality.

Lesson Check p.167

Practice and Problem-Solving Exercises p.168-170

Standardized Test Prep p.170

Mixed Review p.170

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