Question 1018451
The exact steps depend a bit on how you formed the equation for the line containing the two points.  You would either have point-slope form, or slope-intercept form.  Regardless of which form you start, you want to finish in something of the form,  Ax+By=C.


In case you mostly need help in first finding the equation, check this helpful example video:
<a href="https://www.youtube.com/watch?v=VDKztVZUgnM">Equation of Line through Two Given Points</a>