Is the line for the equation y = 1 horizontal or vertical? what is the slope of this line? select the best answer

a. the line is horizontal. the slope is 0.
b. the line is horizontal. the slope is 1.
c. the line is vertical. the slope is undefined
d. the line is vertical. the slope is 0.

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.