Question 1009779: Write an exponential function such that f(-2) = 25 and f(1) = 8/5.
Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website!  can be the form of the exponential function.
Two points are (-2,25) and (1, 8/5).
Take logarithms of both sides, base of your choice, and you will have a linear equation. You would need to make an adjustment to the vertical axis component of your given points.
You'll need to change the data points to (-2,  ) and (1,  ), for whatever base you choose.
If chosen to take logs base 10, then you will have your LINEARIZED points as (-2, 1.39794) and (1, 0.20412).
The rest of the solution process relies on both linear equation skills and logarithm, exponential expression skills and concepts.
You should find  or if desired,  .
|
|
|
