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19-08-2021
Mathematics

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What is “T” if R(-9,4) and the midpoint S(2,-1) ? HELP!

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gaconlc1234 gaconlc1234

19-08-2021

So your question is: S is the midpoint of R and T, find T, right?
Suppose T(x,y)
Because S(2,-1) is the midpoint of R(-9,4) and T(x,y) and follow midpoint method we have:

2 = (-9 + x)/2 <=> 4 = -9 +x <=> 13 = x

-1 = (4+y)/2 <=> -2 = 4 + y <=> -6 = y
=> T(13,-6)

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