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unit 3a test review

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```									      Algebra I CP - Test 3 Review                                          Name _______________________

1. Johnny is going on vacation to Myrtle Beach. The table below shows his distance (d) in miles in
relation to (t) hours from his destination.
T                   1                   2             3                 4
F(t)                190                 130           70                10

a) What is his distance from Myrtle Beach at the start of the trip? ______________
b) What is the meaning of the decrease in 60 in the context of the problem?

c) What is the function rule? __________________________
d) Graph the function. Be sure to label the axis with the dependent and independent variables.
190

130

70

10

1    2       3    4

For #2- 7 determine whether or not each relationship is linear.
2.        y  2 x2  1                                        3.   2 x  3 y  15
4. A caterer charges \$100 for supplies on each job plus \$25 per hour.
5. Another caterer charges \$100 for supplies and then \$5 for the 1st hour, each additional hour the caterer
doubles the hourly rate.
6.
x          1       2 3      4     5
F(x) 22        20     18 16 14

7.
x    -2 0 3 4 7
f(x) -10 -8 -6 -4 -2

Graph the following equations, then identify the x and y-intercepts:
8.                                      9.                                10.
y2                          2 x  5 y  10                                 1
y   x 1
2

x-intercept: ___________                x-intercept: ___________            x-intercept: __________
y-intercept: ___________                y-intercept: ___________            y-intercept: __________
11. Given the table, determine the x and y intercepts.

x     Y
-8    -2                  x-intercept:     ____________
-4    0
-2    1                   y-intercept:   ____________
0     2
6     5

For #12 – 15 find the slope of each line. Simplify all answers.

12.                                                13.

14. Line that passes through points ( -3 , 5) and ( 6 , 11 )
15. Line that passes through points ( 12 , 2 ) and ( -3 , 2 )

16. Sketch the line that passes through ( 4 , 1 ) with a slope of 1.

17.        Joe mows lawns and other yard clean-up tasks during the summer. The amount he
charges is given by the function c(h) = 25 + 8h .

a. What is the slope in this scenario? Include the units of the slope.
b. Interpret the meaning of this slope in the context of the problem.

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