Question

Check My Work?

Write the formula for an exponential graph that crosses (3,1) and (5,4)

I got 1/8(2)^x=y as my final answer

Is this correct?

Answer 1

I think you are correct
y=ab^x
1=ab^3
4=ab^5
divide the second equation by the first one, you get b^2=4, so b=2
plug b=2 either equation you get b=1/8

Answer 2

Hi Alice!

Just in case you would like to see another explanation about this problem, see the picture below.


I told you your answer was correct in PM but I forgot to answer and I just remember :)

I hope this helps!