Thursday

August 21, 2014

August 21, 2014

Posted by **Linda** on Saturday, July 25, 2009 at 2:23pm.

a) 4x+2y=7, x-y=-5

b) 3x=2y, x+y=5

c) x-y=1, 3x-2y=0

d) x-1=2y, 2x-y=-7

- Math -
**Anonymous**, Saturday, July 25, 2009 at 2:29pmI think it is C.

- Math -
**MathMate**, Saturday, July 25, 2009 at 4:05pmsubstitute (-2,-3) into:

c) x-y=1, 3x-2y=0

x-y = -2-(-3) = -2 +3 =1

3x-2y = 3(-2) - 2(-3) = -6 - (-6) = 0

So it*is*C.

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