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Home > CC2 > Chapter 9 > Lesson 9.2.2 > Problem 9-70

9-70.
  1. Evaluate the inequality x + 4 < 2x − 3 for the following values of x. Decide if the given value of x makes the statement true or false. Show all of your work. Homework Help ✎

    1. x = 4

    2. x = −2

    3. x = 7

    4. x = 9

Substitute each value for x in the inequality given above.

4 + 4 < 2(4) − 3

Simplifying, you get:
8 < 8 − 3
8 < 5
Is 8 less than 5?

False

−2 + 4 < 2(−2) − 3

Simplifying, you get:
2 < −4 − 3
2 < −7
Is 2 less than -7?

See parts (a) and (b).

See parts (a) and (b).