In my text book it asks me to rearrange an equation that's in the form y=mx+c into the form ax+by+c=0. The example shows that y=-3x-7 can be rearranged into 3x+y+7=0. Can some show me in detail how this was done?

Question

nikato · Answer

y=-3x-7
+7.       +7
-------------
7+y= -3x
+3x.    +3x
--------------
3x+y+7=0

nikato · Answer

1. Start with original equation.
2. Add 7 to both sides.
3. Add 3x to both sides

thesecret20111 · Answer

ohh I didn't even think of moving everything to the other side! I only the y had moved :D

thesecret20111 · Answer

Thanks :D

nikato · Answer

No problem. U can move thing s to the other side. As long as you do the same thing to both sides