The table of values below represent an exponential function. Find the constant ratio of successive y-values. x y-2 7-110.5015.75123.625235.4375
Answer
A
1.33
B
0.5
C
7
D
1.5
Explanation
Divide each y-value by the one immediately before it: 10.5 ÷ 7 = 1.5. The next ratios agree: 15.75 ÷ 10.5 = 1.5, so the constant ratio is 1.5, choice D.
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