College Algebra 9th txtbk

118 CHAPTER 2 GRAPHS
Technology Connections
To graph y 2 x 2 4 on a graphing calculator, we enter
both 2x 2 4 and 2x 2 4 in the equation editor
[Fig. 11(a)] and graph.
5
5
5
Z Figure 11
(a)
5
(b)
ANSWERS TO MATCHED PROBLEMS
1. y
2. (A) 96 ppb (B) 1:45 P.M. and 5 P.M.
3.
y
5
(9, 3)
P (3, 5) B (3, 5)
5
(4, 2)
(1, 1)
(0, 0)
x
5
5
10
(1, 1)
(4, 2)
(9, 3)
5
x
5
5
5
A (3, 5) C (3, 5)
4. Symmetric with respect to
the origin
5
y
5. Symmetric with respect to
the y axis
5
y
5
5
x
5
5
x
5
5
6. Symmetric with respect to the x axis, the y axis, and the origin
y
5
5
5
x
5