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…

That’s it!

### 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 1:**

**Step 2:** I think is a fine looking point, so I’m going to use it!

**Step 3:**