Direct and Inverse Variaiton
January 05, 2015
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Direct and Inverse Variaiton
January 05, 2015
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Direct and Inverse Variaiton
January 05, 2015
7) (12, 14) and (-24, y)
9) (9, y) and (-18, 6)
11) If y=9 when x=-6, find x when y=3
13) If y=12 when x=-6, find x when y=-24
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Direct and Inverse Variaiton
January 05, 2015
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Direct and Inverse Variaiton
January 05, 2015
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Direct and Inverse Variaiton
January 05, 2015
18) (2, -4) and (-6, y)
20) (12, y) and (4, 7)
22) If y=-18 when x=3, find x when y=30
24) If y=10 when x=-4, find y when x=12
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Direct and Inverse Variaiton
January 05, 2015
Direct Variation Examples
1. The sales at a baseball game vary directly
with the number of people attending. If the
sales for a game are $12,000 when 800
people attend, determine how many people
attend if the sales for a game are $15,000
5. The income of a computer analyst varies
directly as the number of hours worked. If
the analyst earns $256 for working 8 hours,
find the constant of variation.
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Direct and Inverse Variaiton
January 05, 2015
7. Time traveling varies inversly with the
average speed. If a train travels between two
cities in 3 hours at an average speed of 65
miles per hour, how long would it take at an
average speed of 78 miles per hour?
11. The time it takes to bake a turkey varies
inversely with the oven temperature. If it
takes 3 hours to bake a turkey at 300
degrees, find the constant of variation.
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