Yeah this guy above me is right, I took Algebra 1 Honors so I think I'd know. If someone in the future needs the work, all you really need to do to figure this out is input the x coordinate found in the (x,y) so for example (0, 3) into the equation f(x) = 3x + 3 so...
f(x) = 3 (0) + 3 = f(x) = 3 WHATEVER YOU HAVE LEFT IS THE Y COORDINATE SO YOU KNOW WHEN YOU INPUT X INTO THE EQUATION YOU WILL FIND Y WHICH IS 3 (0, 3).
