### Home > INT3 > Chapter 9 > Lesson 9.2.4 > Problem9-136

9-136.

Write the equation of a periodic function that has amplitude $7$ and period $8π.$ Sketch its graph.

In the general equation $y = a · \text{sin}[b\left(x − h\right)] + k$, the parameter $a$ is the amplitude and $b$ is the number of cycles in $2π$.

See the Math Notes box for this lesson (9.2.4) and problem 9-134.

Test your equation on a graphing calculator to see if it meets the given criteria.