Chapter 9 linear inequaliTieS 313
Before we solve inequalities, we will learn how to shade the region on the
number line represented by an inequality.
EXAMPLE
Shade the region on the number line.
x < 0
FIgure 9-5
0
x ≥ 0
FIgure 9-6
0
x > 3
FIgure 9-7
3
x ≤ –2
FIgure 9-8
–2
PRACTICE
Shade the region on the number line.
- x > 4
- x > −5
- x ≤ 1
- x < −3
- x ≥ 10
EXAMPLE
Shade the region on the number line.
PRACTICE
Shade the region on the number line.