Ok, I am graphing P=(1,2) with slope m=3. This is how I worked out

=

=

=

If x=0 then;

=

and so (0,-1)

this would be my second point no, or is this my run? In checking with the book's answer to see if I had done this right it showed my second point to be (2,5) with a run of 1 and a rise of 3......Did I do something wrong in the calculations!?

Thanks!!