Beginning Algebra, 11th Edition

3.5 Graph each linear inequality.

36. 37. 38.

3.6 Decide whether each relationisoris not a function. In Exercises 39 and 40, give the

domain and the range.

43. 44.

Find (a) and(b)

45.ƒ 1 x 2 = 3 x+ 2 46.ƒ 1 x 2 = 2 x^2 - 1 47.ƒ 1 x 2 =|x+3|

ƒ 122 ƒ 1 - 12.

2 x+ 3 y= 12 y=x^2

51 - 2, 4 2 , 1 0, 8 2 , 1 2, 5 2 , 1 2, 3 26 51 8, 3 2 , 1 7, 4 2 , 1 6, 5 2 , 1 5, 6 2 , 1 4, 7 26

3 x+ 5 y 79 2 x- 3 y7- 6 x- 2 yÚ 0

CHAPTER 3 Review Exercises 243

x

y

–3^0

–3

x

y

0

–3

x

y

–3^0

3

x

y

–3^0

MIXED REVIEW EXERCISES

48.The line shown in the graph has unde-
fined slope.

49.The graph of the equation has y-intercept

1 0, - 32.

50.The graph of the equation has x-intercept
1 - 3, 0 2.

52.The graph is that of the equation y=-3.

51.The line shown in the graph has

negative slope.

53.The line shown in the graph has slope 1.

Find the intercepts and the slope of each line. Then graph the line.

Write an equation for each line. Give the final answer in slope-intercept form.

57. 58.Through
    59.Through and 60.Slope 0, through

Graph each inequality.

61.x- 2 y... 6 62.y6- 4 x

1 3, - 52 1 - 4, - 12 1 5, - 52

m=- 14 , b=- 54 1 8, 6 2 ,m=- 3

y=- 2 x- 5 x+ 3 y= 0 y- 5 = 0

Concept Check In Exercises 48–53, match each statement to the appropriate graph or
graphs in A–D. Graphs may be used more than once.

A. B. C. D.

x

y

x 0

y

0