SOLUTION: Write an exponential function for y=ab^x for a graph that includes (1,15) and (0,6)

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Write an exponential function for y=ab^x for a graph that includes (1,15) and (0,6)      Log On


   

Question 634726: Write an exponential function for y=ab^x for a graph that includes (1,15) and (0,6)
Answer by stanbon(75887) About Me  (Show Source):
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Write an exponential function for y=ab^x for a graph that includes (1,15) and (0,6)
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Using (0,6) you get: 6 = a*b^0
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Using (1,15) you get 15 = a*b^1
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Equations:
a = 6
ab = 15
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So, b = 15/6 = 5/2
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Equation:
y = 6*(5/2)^x