# Cell Phone Cost

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```							                             Cell Phone Cost

45
40
35
30
25
20
15
10
5

0 1     2    3   4   5   6   7   8   9   10

1. The y-intercept of the line is
A) 0                 C) 5
B) 15                D) 3

2. The slope of the line is
A) 3                 C) 5
B) 1                 D) 1/5

3. The equation of the line is
A) y = 1/5x – 15    C) y = 1/5x + 15
B) y = 5x + 15              D) y = x + 3

4. Given the equation of the line NEXT=NOW+4, start at 20, which of the
following statements is true?
A)     The slope of the line is ¼ and the y-intercept is 5.
B)     The slope of the line is 1/4x and the y-intercept is 5.
C)     The slope of the line is 4 and the y-intercept is 20.
D)     The slope of the line is 4x and the y-intercept is 20.

```
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