You can make an absolute value function by dragging the YELLOW points almost anywhere on the screen (why almost?).[br][br]The function will have the form f(x) = A|x - B| + C[br][br]Now try to build the same absolute value function by using the A, B and C sliders.[br][br][size=85][b][compare & contrast this applet with "Build & Fit - absolute value f'n I"][/b][/size]