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Is this parallel or perpendicular y=4x+5 and y=-1/4x+4
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5 votes
Is this parallel or perpendicular

y=4x+5 and y=-1/4x+4

User Gary Sheppard
by
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2 Answers

5 votes
It would be I think perpendicular but don't take my word on it cuz I might be wrong....
User Khosro
by
8.2k points
2 votes
y=mx+b
m=slope
paralelll ines have slopes that multiply to -1
first one is y=4x+5, slope is 4
2nd one is y=-1/4x+4, slope is -1/4

4≠-1/4
4 times -1/4=-1
they are perpendicular

User StevenZ
by
8.3k points
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