Mathematics
Linda479
2015-11-18 12:45:42
Find the exponential function that passes through the points (1, 3) and (2, 9).
ANSWERS
jacquelinep
2015-11-18 14:08:48

exponential functions are written like this: f(x)=abˣ we are given f(1)=3 and f(2)=9 so f(1)=ab¹=3 f(2)=ab²=9 ab=3 ab²=9 divide them [latex]frac{ab^2}{ab}=b=frac{9}{3}=3[/latex] b=3 f(x)=a3ˣ f(1)=a3¹=3 3a=3 a=1 te fnction is f(x)=1(3)ˣ

ADD ANSWER