2006-08-06 11:58:26 · 5 answers · asked by Anonymous in Education & Reference ➔ Homework Help
2x-5y=10
First, rearrange and solve for y (or x)...
-5y=10-2x
y=-2+2/5x
Then, substitute for y from the original equation...
2x-5(-2+2/5x)=10
Distribute and solve for x...
2x+10-2x=10
x=0
Then subsitute again back into the original equation the fact that x=0...
2(0)-5y=10
Solve for y...
y=-2
Thus, the solution is x=0 and y=-2
2006-08-06 13:18:15 · answer #1 · answered by Lierin 1 · 0⤊ 0⤋
For y? In that case, it's y = 2/5 x - 2
2006-08-06 20:00:18 · answer #2 · answered by MollyMAM 6 · 0⤊ 0⤋
That's a line, or an infinite set of coordinate pairs. You need two equations to get a unique solution for each variable.
2006-08-06 19:23:08 · answer #3 · answered by Goddess of Grammar 7 · 0⤊ 0⤋
y=2/5x - 2
x=5/2y + 5
2006-08-06 21:48:45 · answer #4 · answered by Fergie 2 · 0⤊ 0⤋
solve for x or y?
2006-08-06 19:03:13 · answer #5 · answered by Seaweed G 4 · 0⤊ 0⤋