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OpenStudy (anonymous):
is (2,3) a soluition of the system 3x+4y=18 2x-y=1
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OpenStudy (anonymous):
Yes, it is ;)
OpenStudy (anonymous):
Sobstitute x with 2 in first(or second) equation and y with 3 in the same equation, if it's an equivalence then it's true ;)
OpenStudy (anonymous):
yes, (2) 3x+4y=18 (3) 2x-y=1 6x+8y=36 -6x-3y=3 =8y=36 +-3y=3 y=3 2x-(3)=1 2x=4 x=2
OpenStudy (anonymous):
THANK YOU BOTH I JUST HAVE TO PLUF IN THE Y AND X =)
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