title: How to linear interpolate the x, y, and z between two points?
body: <p>Lets say at start time 0s I have point_1(10,20,35) and  at end time 10s I have point_2(20,40,50)</p>
  
  <p>How would I go about using linear interpolation to find where a point would be at time 5s?</p>
  
  <p>I want to do this by hand without using any python libraries. I'm trying to understand how to use linear interpolation with an x,y, and z plane.</p>
  
  <p>I know i would start with this</p>
  
  <pre><code>start_time = 0
  start_x = 10
  start_y = 20
  start_z = 35
  
  end_time = 10
  end_x = 20
  end_y = 40
  end_z = 50
  
  # I want the point at time 5s
  time = 5
  def interpolate():
      pass
  </code></pre>