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The upward opening parabola f of x vertex is at (0, 0) with the left and right slopes pass through (negative 2, 4) and (2, 4) in quadrants 2 and 1. The upward opening parabola g of x vertex is at (0, 0) with the left slope passing through (negative 1, 9) in quadrant 2 and the right slope passing through the plotted closed circle (1, 9) in quadrant 1.