### Home > GB8I > Chapter 11 Unit 12 > Lesson INT1: 11.2.1 > Problem 11-49

11-49.

Write the equation of an exponential function that passes through each pair of points.

To start, write a system of equations in the form

by substituting the points in forand.Divide the 2nd equation into the first to eliminate

*a*.

Solve for.Substitute the

value you found into one of the original equations.

Solve for.

Substitute bothandback into the original equation with along withand.