What is the y intercept of the quadratic function f(x)= (x-8)(x+3)

The y-intercept of a graph occurs when the x value is zero. That being said, we need to plug in zero for x in the equation to find where the graph sits when it intersects the y axis.
y=(x-8)(x+3)
y=(0-8)(0+3)
y=(-8)(3)
y= -24

Is it multiple choice