Page 97 - Math Course 3 (Book 1)
P. 97
Rate of Change and Direct Variation
Skill Practice!
Find the constant rate of change for each linear function and interpret its meaning.
1. 2.
Gallons Quarts Width(ft) Height(in)
x y x y
1 4 2 10
2 8 4 14
3 12 6 18
4 16 8 22
Number of Teachers Allowance
3. 4.
Teachers Allowance($)
Students Age(years)
PAPER COSTS
5. The cost of paper varies directly with the number of reams bought. Suppose 2 reams cost $5.10.
a. Write an equation that could be used to find b. Find the cost of 15 reams of paper.
the cost of x reams of paper.
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