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

9-136.

Write the equation of a periodic function that has amplitude 7 and period 8*π*. Sketch its graph. Homework Help ✎

In the general equation *y* = *a* · sin[*b*(*x* − *h*)] + *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.