Equations of Lines

[baily106]

How would you approach the following?

Find the equation of the line passing through the point (3,2) with y-intercept 1.

Thanks,
Anisha

[tommywallach]

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