All that is needed is 2 points, or 1 point and a slope. Either way the slope is going to be discovered. , and are from the point .
1 Point and slope
If I need a line to pass through the point and has slope of , then I just need to plug my pieces into the form.
so my equation looks like…
With 2 Points
The process is exactly the same with 2 points, except that the slope needs to be calculated.
Step 1: Calculate the slope
Step 2: Pick which point you like better.
Step 3: Use slope from step 1, your favorite point, then plug in to point-slope form.
Find the equation of the line passing through the points , and
Step 2: I think is a fine looking point, so I’m going to use it!