x-y= -4
-2x+2y= -8
2006-07-18 03:36:36 · 12 answers · asked by Brandon ツ 3 in Science & Mathematics ➔ Mathematics
I will select 2morrow(-:
2006-07-18 03:39:28 · update #1
There are no solutions.
If you multiply both sides of the 1st equation by 2, you get:
2x-2y=-8
The 2nd equation, of course, is -2x+2y=-8.
And when you add the two equations, you get 0+0=-16, which is obviously false. Therefore, the system is "inconsistent," and has no solutions.
Hope that helps!
2006-07-18 03:48:15 · answer #1 · answered by Jay H 5 · 3⤊ 0⤋
x - y = -4
-2x + 2y = -8
Solve each equation for y
x - y = -4
-y = -x - 4
y = x + 4
-2x + 2y = -8
2y = 2x - 8
y = x - 4
Now that they are in the slope-intercept form (y = mx + b), you see that the lines are parallel (have the same slope), so there is no solution.
2006-07-18 10:54:45 · answer #2 · answered by kindricko 7 · 0⤊ 0⤋
x - y = -4
-2x + 2y = -8
-2x + 2y = -8
x - y = 4
x - y = -4
x - y = 4
No solution
2006-07-18 11:37:41 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
x-y=-4
x-y=4
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2x-2y=0 => x=y infinite answers
2006-07-18 10:42:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I used the substitution method and got this answer:
x = -8
y = -4
hope thats correct..good luck!!
2006-07-18 10:40:23 · answer #5 · answered by Anonymous · 0⤊ 0⤋
No solution
2006-07-18 10:40:29 · answer #6 · answered by Anonymous · 0⤊ 0⤋
x - y = - 4
- x + y = -4
i dont think it has any solution
2006-07-18 11:43:26 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Huh?
2006-07-18 10:39:48 · answer #8 · answered by Sandy B 3 · 0⤊ 0⤋
it doesn't solve. i can't remember if that means they are the same line or what.
2006-07-18 10:40:41 · answer #9 · answered by cool dude 2 · 0⤊ 0⤋
There are no solutions.
2006-07-18 10:40:07 · answer #10 · answered by Pascal 7 · 0⤊ 0⤋