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BaLLatris [955]
3 years ago
14

Given that point A is the midpoint of line segment ED, where E( -1,9) and A(4,5), what is the location of point D?

Mathematics
1 answer:
yuradex [85]3 years ago
8 0

Answer:

  D(9, 1)

Step-by-step explanation:

A being the midpoint means its coordinates satisfy ...

  A = (E + D)/2

Solving for D, we find ...

  D = 2A -E

  = 2(4, 5) -(-1, 9) = (2·4 +1, 2·5 -9)

  D = (9, 1)

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