Question

If (-3, y) lies on the graph of y = (1/2)^x, then what is y?

Answer 1

Since we know the value of x, all we have to do is plug it into the function to find the value of y.

Explanation:

`y = (1/2)^-3`

`y = (1/(1/2))^3`

`y = 2^3`

`y = 8`

Practice exercises:

1. An exponential function of the form `y = c xx n^(x - 4)` passes through the points (4, 2) and (5, 6). Find the equation of the function.

2. Find the equation of the following . It is an exponential function.

Good luck!