9th grade algebra
posted by geogria .
decide whether the graphs of the two equations are parallel lines.
a. y=3x+2, y=1/3x+4
b. 3y=15x+4, y=5x+1

do the lines in a) have the same slope?
do the lines in b) have the same slope? 
I suppose..

You suppose wrong.
Put the sets of line in y=mx + b
and then compare the slope m. Parallel lines have the same slope.
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