title: Lanier function in WPF xaml
body: <p>I want to create a Lanier function with his Incline that I have
  for example y =3.5x + 7 &gt;&gt;&gt; M(incline) = 3.5, N = 7.</p>
  <ul>
  <li>don't do it by moving the points.</li>
  <li>Do this only with the help of an incline and not by calculating points.</li>
  </ul>
  <p>I'm not very good at English so sorry if I have mistakes.
  thank you in advance :)</p>