Would you be able to please show me the steps for how to answer these?

4. Using the definition of the derivative, find f'(x). Then find f'( - 4), f'(0), and f'(4) when the derivative exists. f ( x ) = 4x + 3 Find f'(x) using the definition of the derivative. f' ( x ) = Find f'( -4) if the derivative exists. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. f'( -4) = (Simplify your answer.) O B. The derivative does not exist. Find f'(0) if the derivative exists. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. f'(0) = (Simplify your answer.) O B. The derivative does not exist. Find f'(4) if the derivative exists. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. f' ( 4 ) = (Simplify your answer.) O B. The derivative does not exist. 5. For the given function, find (a) the equation of the secant line through the points where x has the given values and (b) the equation of the tangent line when x has the first value. y = f ( x ) = x + x; x= -4, x= -2 a. The equation of the secant line is y = b. The equation of the tangent line is y = 6. a. Find an equation for the secant line through the points where x has the given values. b. Find an equation for the line tangent to the curve when x has the first value. y = 61x; x=16, x =25 a. The equation for the secant line is y = b. The equation for the tangent line is y =