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heyhey8jdjsk
heyhey8jdjsk heyhey8jdjsk
  • 19-01-2017
  • Mathematics
Answered

I think it is robert but idk and I wouldn't know the reason it was him either

I think it is robert but idk and I wouldn t know the reason it was him either class=

Verified Answer :

Anonymous Anonymous
  • 19-01-2017

If the lines are perpendicular to each other, then there slopes would be opposite and reciprocal to each other.
In Justin's case, slope of first line is -1/2, so it would be 2 in second, but it's -2 there as a slope of 2nd line. so, he's wrong.
Now, in Robert's case, reciprocal of -1/2 would be 2, so he's correct

In short, "Robert is Correct"

Hope this helps!

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