The slope of the line is 3, and you know it goes through the point (2, 3). Another point on the line goes through the* x*-coordinate 1. Find the missing *y*-coordinate:

(1, )

We can plug in the numbers we know into the formula for the slope of a line and solve for the unknown *y*-coordinate.

3 =

3 =

3 = 3 – *y*

*y* = 0