You can put this solution on YOUR website! To find this, rearrange the equation so that it is in the form y=mx+b. If you do so, b is the y intercept.
2x-4y=-12
2x-4y-2x=-12-2x
2x-2x-4y=-12-2x
0-4y=-12-2x
-4y=-12-2x
Now that you have it in the right form, m or 1/2 is the slope and 3 or b is the y-intercept.