# High School Math : Graphing Exponential Functions

## Example Questions

### Example Question #1 : Graphing Exponential Functions

Find the -intercept(s) of .    This function does not cross the -axis. Explanation:

To find the -intercept, set in the equation and solve.     ### Example Question #2 : Graphing Exponential Functions

Find the -intercept(s) of . and      Explanation:

To find the -intercept(s) of , set the value equal to zero and solve.     ### Example Question #3 : Graphing Exponential Functions

Find the -intercept(s) of .  and   and   and Explanation:

To find the -intercept(s) of , we need to set the numerator equal to zero and solve.

First, notice that can be factored into . Now set that equal to zero: .

Since we have two sets in parentheses, there are two separate values that can cause our equation to equal zero: one where and one where .

Solve for each value:  and  .

Therefore there are two -interecpts: and .

### Example Question #4 : Graphing Exponential Functions

Find the -intercept(s) of .    or The function does not cross the -axis. Explanation:

To find the -intercept(s) of , we need to set the numerator equal to zero.

That means .

The best way to solve for a funky equation like this is to graph it in your calculator and calculate the roots. The result is . 