### Home > CCA2 > Chapter Ch7 > Lesson 7.2.3 > Problem 7-150

7-150.

An exponential function * *passes through

*.*

Find the equation of the function.

Substitute

and then use the points to write a system of equations. Rewrite each equation by subtracting

from both sides. Solve the first equation for

.Substitute for

in the second equation.Solve for

.If the equation also passes through

, what is the value of ?Substitute

and .