What type of linear system is 3x − 18y = 20 and 6y − x = –12?
inequivalent system
inconsistent system
dependent system
independent system
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OpenStudy (anonymous):
Hey I remember you
OpenStudy (anonymous):
I guess you got to solve for x
OpenStudy (anonymous):
what grade is this
OpenStudy (anonymous):
This is precalculas 12th grade math
OpenStudy (anonymous):
from the 17th ward
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OpenStudy (anonymous):
see i cant do that
OpenStudy (anonymous):
sorry
OpenStudy (anonymous):
I see
OpenStudy (anonymous):
@dan815
OpenStudy (anonymous):
@amistre64
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OpenStudy (anonymous):
@texaschic101
OpenStudy (misty1212):
HI!!
OpenStudy (anonymous):
hey
OpenStudy (misty1212):
lets solve it and see
OpenStudy (misty1212):
oops
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OpenStudy (anonymous):
you was good I know what you meant
OpenStudy (misty1212):
\[3x-18y=20\\
-x+6y=-12\]
OpenStudy (misty1212):
these two lines have the same slope, but they are not the same line, they are parallel
if you multiply the second equation by \(-3\) you get the two equations
\[3x-18y=20\\
3x-18y=36\]
OpenStudy (misty1212):
there is no way for \(3x-18y\) to be both \(20\) AND \(36\) so there is no solution, i.e. they are parallel
OpenStudy (anonymous):
so they are ineq
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OpenStudy (anonymous):
inequivalent
OpenStudy (misty1212):
i believe the math teachers call this "inconsistent"