Download Microsoft Word - Direct Variation Worksheet

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Direct Variation Word Problem Worksheet
Name:
Date: _____________
For each problem below, answer the question that is stated, then state the
constant of variation for each
problem and write an equation in y = ax form to represent the problem.
1.
y varies directly as x. If x = 5 when y = 12, find x when y = 30.
2.
Heather’s weekly pay is directly proportional to the number of hours she
works at the record store. Her
pay is $174 for 24 hours of work. Find the amount of pay for 40 hours of
work.
3.
Eduardo counted ten seconds between seeing lightning and hearing thunder, and
he knew that the
lightning was about 2 miles away. If the time between seeing lightning and
hearing thunder varies
directly with the distance away from the lightning, about how far away was
the lightning if Eduardo
counted 4 seconds between the next flash of lightning and thunder?
4.
A person’s weekly pay is directly proportional to the number of hours worked.
Shawn’s pay is $123.00
for 20 hours of work. Find the amount of pay for 31 hours of work.
5.
At top speed, a rabbit can cover 7 miles in 12 minutes. If a rabbit could
continue at this rate indefinitely,
how long would it take the rabbit to cross the 220-mile expanse of the Mojave
Desert? (The rabbit’s
distance varies directly with his time.)
6.
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. The number
of gallons it uses is
directly proportional to the number of loads the dishwasher can clean. How
many gallons of water
would be used to wash 12 loads?
Choose any four problems from above (except #1) to graph on the graphs
provided below. Number each graph
with the corresponding problem number, and be sure to give each graph a title
and to number and label each of
the axes.
Download
1. Math
Microsoft Word - Direct Variation
Worksheet.doc
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