Question 613919: Write an exponential function y=ab^x for a graph that includes (1,14) and (0,4).
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Write an exponential function y=ab^x for a graph that includes (1,14) and (0,4).
------
y = ab^x
Solve for a and b:
Using (0,4) 4 = ab^0
4 = a*1
a = 4
------
Using a = 1 and (1,14)
14 = 4*b^1
b = 14/4 = 7/2
---
Equation:
y = 4*(7/2)^x
============================
Cheers,
Stan H.
==================
|
|
|
