title: Inersection between dataframe graph and numpy graph
body: <p>I am trying to get the intersection between a dataframe graph and a numpy graph. I plot a line and two cloums of a dataframe. </p>
  
  <pre><code>#Line graph
  x = np.linespace(0,10)
  y=5x+3
  
  #dataframe
  data.plot(kind='line', x='A', y='B', ax=ax,)  
  </code></pre>
  
  <p>How can i find the intersection between these two graphs?</p>
  
  <p>I am very new to this forum so if i can add additional information please tell me. </p>