Sketch a graph of f z 0 5z 21 1 Before sketching the graph determine where the function has its minimum or maximum value so you can place your first point there 5 4 3 2 1 5 4 3 2 1 Clear All Draw 1 2 3 4 5 2 The zeros of the function are at the values The x intercept s are at the points The y intercept is at the point