by tommywallach Mon Jun 09, 2014 11:11 pm
Hey Baily,
To get the equation of a line, you only need two points. That will allow you to get the slope, and then find the y-intercept. This question makes it even easer, by giving you the y-intercept.
Here are two points: (0, 1) (3,2) (because the y-intercept is where x equals zero).
Now we can get the slope, it goes 3 units to the right for every 1 it goes up, so 1/3. We already knew the y-intercept:
y = 1/3x + 1