What is the image of point (2, 8) for mapping (x, y) , (x – 8, y + 1)

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Ineed to know the answer to this algebra question.

Draw a scaled copy of the circle using a scale factor of 2