The point $(-3,4)$ has the distance

from the line defined by $$y = -2x+2$$
Hint: This is like the preceding two problems combined. You will need to do quite a few calculations. To help you check as you go along I recommend you draw a picture and keep checking your algebra against the picture. You could also do the next problem first and then simply use the formula you obtain there. (However, the purpose of including this problem is to help you gear up for the next one.)