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OpenStudy (anonymous):
Solve the following system of linear equations by substitution: 6x+3y=30 8x+4y=12
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OpenStudy (agreene):
No solutions exist, these are parallel lines.
OpenStudy (anonymous):
Yeah I thought that too
OpenStudy (anonymous):
How can you tell that they are parallel lines?
OpenStudy (agreene):
6x+3y=30 ==> y=10-2x 8x+4y=12 ==> y= 3-2x same slope, different intercepts: parallel, NSE QED.
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