8(w - 1) + 13 - 7w = 9 please, I need help, I need a simple explanation and step by step answer, I'm struggling

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.

Consider the diagram. lines e and c can be described as

If y varies as x, and y=8 as x=4 what will be the value of y if x=2