title: How can I get the coordinates of some point on an already-settled Graph?
body: <p>In manim, I want to get the coordinates of a certain point on a graph?</p>
  
  <pre><code>class Formula2(GraphScene):
      CONFIG = {
          "x_min" : 0,
          "x_max" : 100.3,
          "x_tick_frequency": 10,
          "y_min" : 0,
          "y_max" : 100.3,
          "y_tick_frequency": 10,
          "graph_origin" : [-4,-3,0] ,
          "function_color" : RED ,
          "axes_color" : WHITE ,
          "x_labeled_nums" : range(10,100,10),
          "y_labeled_nums" : range(10,100,10)
      }
      def construct(self):
          self.setup_axes(animate=True)```
  What's my next method or function?
  </code></pre>