The given equation is
f(x) = sin(- 4x)
Recall that
Sin(- x) = - Sin(x)
Thus, the equation becomes
f(x) = - sin(4x)
We would substitute values of x into the equation and find the corresponding values of y. We have
if x = 0, f(x) = - Sin(4 * 0) = 0
The graph is shown below
