Question

B is the midpoint of line AC and E is the midpoint of line BD. If A(-9,-4), C(-1,6), and E(-4,-3) find the coordinates of D?

Answer 1

Answer:

((-9 - 1)/2, (-4 + 6)/2) = (-5,1)

 

((-5 + x)/2, (1 + y)/2) = (-4,-3)

 

(-5 + x)/2 = -4

-5 + x = -8

x = -3

 

(1 + y)/2 = -3

1 + y = -6

y = -7

 

(-3,-7)

Answer 2

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