422 Linear FunctionsPractice
Chapter Test
- Complete the function table for y = 4 x and
identify the domain and range.
x 4 xy
5
6
7
8- NAME TAGS Charmaine can make 32 name
tags per hour. Make a function table that
shows the number of name tags she can
make in 3, 4, 5, and 6 hours.
Graph each equation.- y = x + 5
- y = 3 x + 2
- y = - 2 x + 3
- FINANCIAL LITERACY Clara earns $9 per
hour mowing lawns. Make a function table
and graph that show her total earnings for
2, 4, 6, and 8 hours. - MULTIPLE CHOICE During a bike-a-thon,
Shalonda cycled at a constant rate. The
table shows the distance she covered in
half-hour intervals.
Time (h) Distance (mi)
_^12 6
112
1 _^12 18
224Which of the following equations
represents the distance d Shalonda covered
after h hours?
A. d = 6 + h C. d = 12 + h
B. d = 6 h D. d = 12 h- TEMPERATURE Find the rate of change in
degrees per hour.
Time (h) 012
Temperature ( ̊C) 50 52 54- MONEY The table shows the amount
of money José saved over a period of
time. Graph the data. Then find the
slope of the line. Explain what the slope
represents.
Amount ($) 30 60 90
Weeks 123- TECHNOLOGY The time it takes to burn
information onto a CD varies directly with
the amount of information. If 2.5 megabytes
of information take 10 seconds to burn, how
long does it take to burn 10 megabytes of
information? - RACING In the formula d = rt, the time t
varies inversely with the rate r. A race car
traveling 125 miles per hour completed
one lap around a racetrack in 1.2 minutes.
How fast was the car traveling if it
completed the next lap in 0.8 minute? - EXTENDED RESPONSE The function
m = 6 h represents how much money
Martha makes for every hour she works.
Part A What is her hourly rate, or her
unit rate, of pay?
Part B Create an input/output table of
her earnings from 5 to 10 hours.
Part C Graph the function.
Part D How is the rate of change related
to the graph?
418_422_C07_SGR_895130.indd 422 12/31/09 4:35 PM