Find the slope . (2,4) (4,6)

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.

Which point is a solution to y s 4x + 5?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !