x+2y=7 ....(1)
2x+4y=3 ....(2)
Divide (2) by 2 to get
x+2y=1.5 ...(2a)
Since the coefficients of (2a) and (1) are identical, but the right hand side is not, we conclude that the two equations represent two lines that are parallel and distinct.
is the pair of lines parallel x+2y=7 and 2x+4y=3
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