SOLUTION: tell wheather each pair is parallel
y=-7x-9,-3y=21x+7
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Question 831684: tell wheather each pair is parallel
y=-7x-9,-3y=21x+7
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
y=-7x-9,
-3y=21x+7
/-3
y=-7x-(7/3)
compare both equations
m=-7
slopes are equal
so lines are parallel
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