Line passing through the point (4,-7) and has slop of 3

Aha! I love these types of questions. This is where you are going to use point-slope form!

As a reminder...point slope form is 

So if we have our coordinates (4, -7) -- 4 would be  and -7 would be -- now you need to plug them in.

But remember m = slope.

y + 7 = 3 (x - 4) -- now convert into standard form.

Standard form: y = 3x - 19

Hello!
your answer should be c