### Home > A2C > Chapter 13 > Lesson 13.1.4 > Problem13-87

13-87.

An exponential function has an asymptote at $y = 5$ and passes through the points $(2, 5.64)$ and $(-1, 15)$. Find the equation of the function. Homework Help ✎

Use $y = ab^x + k.$

$y = 4(0.4)^x + 5$