## anonymous 5 years ago write an exponential equation from two points. (3, 1.5) (4, 15)

1. anonymous

So you have $y = Ae^{Rx}$ Taking each x,y pair and plugging into that equation will give you two equations you can use to find A and R

2. anonymous

um the equation my teacher gave me was y=ab^x. I got the answer of y=.0015(10)^x and I was just checking to make sure it was correct. :0]

3. anonymous

Ok. Your b = My e^R. $1.5 = ab^3$ $15 = ab^4$ Dividing them we have $\frac{15}{1.5} = \frac{ab^4}{ab^3} \rightarrow 10 = b$ Then plugging back in for b we have $1.5 = a(10)^3\rightarrow 0.0015 = a$ So yeah $y = .0015(10)^x$

4. anonymous

WHOOP! Thanks a bunch Lego Man!! Your assistance is highly appreciated!!

5. anonymous

Anytime =)