Activity B: Get the Gizmo ready: Absolute value . Turn off Show derivative. functions . Select Absolute value function. Turn on Show tangent line. 1. Set a to 1 and b to -2 to graph f(x) = (x| - 2. (Notice that, for absolute value functions, the tangent line is an extension of one part of the graph. ) Drag the red point along the graph. A. What is the equation of the left half of the graph (where x 0)? C. What is the derivative (slope) of the left half? Of the right half? D. If the graph of a function has a break in it (a hole or discontinuity), or if it has a sharp turn (like a corner), then the derivative (f (x)) is not defined at that point. Where do you think f(x) for an absolute value function is undefined? E. Based on what you have seen, how would you write the derivative of f(x) = (x| - 2? f (x) = Explain. Select Show derivative to check. (The light blue graph shows f(x) at all x-values.) F. Vary b. How does b affect the derivative? Explain why this makes sense. G. Vary a and b to see other absolute value functions. In general, what is the derivative of f(x) = alx| + b? f(x) = 2. Find the derivative of each function. For A-D, check your answers in the Gizmo. A. If f(x) = |x| + 4, then f(x) = B. If f(x) = -2|x| - 5, then f (x) = C. If f(x) = 0.5|x| + 3, then f (x) = D. If f(x) = -1.4/x| + 3.7, then f (x) = E. If f(x) = 4|x + 31 -2, then f(x) =