We can start this equation off by noticing the fact that this is a linear equation, which we can write in the form of:
. We can plug in our x values and y values given. I am going to start on the second line:
We plug in the given point:
.

We can also plug in the point
to get:

We get

Therefore, our equation for the SECOND line is:

Hope that this helps you do the first line.