Use the method described in Section 2.7to write each inequality as a compound inequality,
and graph its solution set in the rectangular coordinate plane.
Graph each compound inequality. See Example 4.
- or 34. or
- or 36. or
- 3 x+ 2 y 66 or x- 2 y 72 38.x-yÚ 1 or x+y... 4
x- 27 y x 61 x+ 36 y x 73
x-yÚ 1 yÚ 2 x+y... 2 yÚ 3
|x+ 1 | 62 |y- 3 | 62
|x| 63 |y| 65
180 CHAPTER 3 Graphs, Linear Equations, and Functions
EXERCISES 39 – 46
Match each inequality with its calculator graph. (Hint: Use the slope, y-intercept, and
inequality symbol in making your choice.)
A. B.
C. D.
y...- 3 x- 6 yÚ- 3 x- 6
y... 3 x- 6 yÚ 3 x- 6
TECHNOLOGY INSIGHTS
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The graph of a linear equation is shown on a graphing calculator screen,
along with the x-value of the x-intercept of the line. Use the screen to solve (a) ,
(b) ,and (c). See the Connections box.
y 60 y 70
y= 0
y=mx+b
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45. 46. 10
