How do you move backwards along a path

[andydevs]

I have a graph

graph = axes.get_graph(lambda x: (1 / 4)*(x - 7)**2 + 2, color=BLUE)

And I wanted to move a point along this graph going from right to left (instead of from left to right). I tried this

# Move dot over
curve_segment = ParametricCurve(t_func=graph.t_func, t_range=[7, 5, -0.1])
self.play(MoveAlongPath(dot, curve_segment, run_time=4))
self.wait()

But no matter what direction I order the start and end it just moves from left to right along the graph...

Here's the full scene if anyone wants to try it.

class MyScene(Scene):
    def construct(self):
        # Create graph
        axes = Axes((-1, 16), (-1, 9))
        graph = axes.get_graph(lambda x: (1 / 4)*(x - 7)**2 + 2, color=BLUE)
        self.play(LaggedStart(
            ShowCreation(axes),
            ShowCreation(graph)
        ))
        self.wait()

        # Point out minimum
        dot = Dot().move_to(axes.input_to_graph_point(7, graph))
        self.play(FadeIn(dot))
        self.wait()

        # Move dot over
        curve_segment = ParametricCurve(t_func=graph.t_func, t_range=[5, 7, 0.1])
        self.play(MoveAlongPath(dot, curve_segment, run_time=4))
        self.wait()

[TonyCrane]

curve_segment.reverse_points() will solve this. That is:

curve_segment = ParametricCurve(t_func=graph.t_func, t_range=[5, 7, 0.1])
curve_segment.reverse_points()
self.play(MoveAlongPath(dot, curve_segment, run_time=4))
self.wait()