def construct(self):
    self.setup_axes()
    self.x_axis_label_mob.shift(DOWN)
    self.draw_graph()
    self.show_product()
    self.comment_on_area_wierdness()
    self.note_units()
def construct(self):
    self.setup_axes()
    self.x_axis_label_mob.shift(DOWN)
    self.draw_graph()
    self.show_product()
    self.comment_on_area_wierdness()
    self.note_units()