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OpenStudy (anonymous):
4x + y = 8 2x - y = 4 a. (0,2) c. (2,0) b. (-2,0) d. (0,-2)
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OpenStudy (muzzack):
lets use elimination
OpenStudy (muzzack):
4x + y = 8 2x - y = 4 ----- subtract ------ 2x=4 ----- x=2
OpenStudy (muzzack):
now subtitute 2x - y = 4 -------- 2(2) - y = 4 ----- 4-y=4 -y=0 y=0
OpenStudy (muzzack):
(2,0)
OpenStudy (anonymous):
thanks
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