2007-12-02 04:17:34 · 3 answers · asked by sue m 2 in Education & Reference ➔ Homework Help
y=-3x+2
y=2x-8
plug in what y equals in the first equation into the second equation where the y is
-3x+2 = 2x-8
Minus 2 from each side
-3x+= 2x-10
Minus 2x from each side
-5x=-10
x=2
Plug in the x into any of the two equations to get y
y=-3(2) + 2 = -4
Your answer is (2,-4)
2007-12-02 04:21:24 · answer #1 · answered by superfergalicious 5 · 0⤊ 0⤋
Dear sue,
Since y=y, we can set those two equal and find x.
-3x+2=2x-8
2=5x-8
10=5x
x=2
Now plug in x to either equation to get y.
2(2)-8=y
y=-4
Solution is (2,-4)
2007-12-02 12:21:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋
y=-3x+2
y=2x-8
2x-8=-3x+2
2x+3x-8=-3x+2
5x-8+8=2+8
5x=10
x=2
y=-3(2)+2= -6+4=-2
x=2 y=-2
2007-12-02 12:46:09 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋