SOLUTION: Im not understanding something to do with Exponential functions Find the Exponential function f(x)=a^x whos grpah is given. Graph points are (-2,4) I did f(-2)=4 a^-2 =4

Algebra ->  Exponents -> SOLUTION: Im not understanding something to do with Exponential functions Find the Exponential function f(x)=a^x whos grpah is given. Graph points are (-2,4) I did f(-2)=4 a^-2 =4       Log On


   

Question 1100194: Im not understanding something to do with Exponential functions
Find the Exponential function f(x)=a^x whos grpah is given.
Graph points are (-2,4)
I did f(-2)=4
a^-2 =4
a^2=-4
and im stuck because now im getting a root of a negative, which this is not about imaginary numbers.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the Exponential function f(x)=a^x whos grpah is given.
Graph points are (-2,4)
I did f(-2)=4
a^-2 =4
--------------
1/a^2 = 4
a^2 = 1/4
a = 1/2
==============
a^2=-4
and im stuck because now im getting a root of a negative, which this is not about imaginary numbers.