Question 54566
The coordinates you are given are the x and y values for the linear equation.  Simply substitue the coordinate you are given into the equation and isolate the other variable:
Pair 1 (0,) so x=0 and we try to find y
3(0)+4y=12.......4y=12...........y=3
so the first pair is (0,3)

Pair 2 (,3/4) so y=3/4 and we try to find x
3x+ 4(3/4)=12 ............3x+3=12.........3x=9.....x=3


And so on and so on