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Mathematics 23 Online
OpenStudy (anonymous):

Which of the following shows two equations that have the same solution?

OpenStudy (anonymous):

OpenStudy (anonymous):

a

OpenStudy (anonymous):

@whpalmer4

OpenStudy (johnweldon1993):

^Disagree

OpenStudy (anonymous):

john you r wrong

OpenStudy (johnweldon1993):

2x + y = 7 y = 2x + 7 Change the first one into slope intercept... 2x + y = 7 y = -2x + 7 So again...incorrect

OpenStudy (anonymous):

are you realated to elemanty school music teacher

OpenStudy (anonymous):

john r u?

OpenStudy (johnweldon1993):

Related to an elementary music school teacher? No I am not

OpenStudy (anonymous):

so is it A?

OpenStudy (johnweldon1993):

No @isa_243 I showed above why A is incorrect

OpenStudy (anonymous):

oh ok

OpenStudy (anonymous):

john the question is not that perplexing

OpenStudy (anonymous):

i think its B? @johnweldon1993

OpenStudy (johnweldon1993):

Not quite @isa_243 ... B) x - 2y = 13 2y - x = 13 Can you make these 2 equations looks exactly the same? x - 2y = 13 -2y = x + 13 2y = -x - 13 2y - x = 13 2y = x + 13 So no again Just do as I am showing...put each equation in slope intercept form (y = mx + b) and see if they are the same

OpenStudy (anonymous):

ok its D @johnweldon1993

OpenStudy (johnweldon1993):

2x + 2y = 12 2x - 2y = -12 Put both in slope intercept 2y = -2x + 12 and -2y = -2x - 12 2y = 2x + 12 Still not the same

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