Algebra Demystified 2nd Ed

Chapter 9 linear inequaliTieS 345

Quiz

1. The solution to 56 xx +  >  87  –  is

a. x<^1

6

b. x>- 1

C. x<- 1

D. x>^1

6

2. The inequality x > – 3 is represented by

–3

–3

–3

–3

A.

C.

B.

D.

FIgure 9-21

3. The solution to 62 341
   2

– xx≤  +   +  1







is

a. x≥-^1

4

b. x≤-^1

4

C. x≤^1

2

D. x≥^1

2

4. The inequality x < 8 is represented by

8

8

8

8

A.

C.

B.

D.

FIgure 9-22

5. The interval notation for x ≤ 4 is
   a. [, 4  )∞
   b. (, 4  )∞
   C. (,-∞ ) 4
   D. (,-∞ ] 4