Which graph represents f(x)=2x3 ? a. a polynomial function is graphed on the coordinate plane. the horizontal axis ranges from negative 6 to 6 in increments of 1. the vertical axis ranges from negative 6 to 6 in increments of 1. the u shape curve opens down, begins in the third quadrant, passes through begin ordered pair 0 comma 0 end ordered pair and ends in the fourth quadrant. b. a polynomial function is graphed on the coordinate plane. the horizontal axis ranges from negative 6 to 6 in increments of 1. the vertical axis ranges from negative 6 to 6 in increments of 1. the u shape curve opens up, begins in the second quadrant, passes through begin ordered pair 0 comma 0 end ordered pair and ends in the first quadrant. c. a polynomial function is graphed on the coordinate plane. the horizontal axis ranges from negative 6 to 6 in increments of 1. the vertical axis ranges from negative 6 to 6 in increments of 1. the graph begins in the second quadrant and extends to the fourth quadrant as an s shape curve. d. a polynomial function is graphed on the coordinate plane. the horizontal axis ranges from negative 6 to 6 in increments of 1. the vertical axis ranges from negative 6 to 6 in increments of 1. the graph begins in the third quadrant and extends to the first quadrant as an s shape curve.