Suppose that f(x ) = 7x- -6 XS - 2 where a and b are some constants. Use f(x) in parts (a)-(e). ax +b x> - 2(c) If f(x) is to be continuous at x= - 2, what equation involving a and b must be true? The function f is continuous at x = - 1 if the equation is true.(f) Find values for a and b that make f(x) differentiable at - 2. f(x) is differentiable at - 2 if a = and b =