### Home > GB8I > Chapter 8 Unit 9 > Lesson INT1: 8.2.3 > Problem 8-121

8-121.

An exponential function of the form that passes through the points

What is the equation of the function?

Read Math Notes box in Lesson 8.2.2 on curve fitting an exponential function.

Create two equations using the points

and .

Equation:

Equation: Isolate

for both equations. Use the Equal Values Method to solve for.Substitute

into one of the original equations, and solve for.Use the equation to sketch a graph of the function.

Use the eTool below to help solve the problem.

Click the link at the right to view full version of the eTool: Int1 8-121 HW eTool.