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Let X,Y and Z be points such that \(\frac{XZ}{XY} = \frac{ZY}{XY} = \frac{1}{2}.\)If Y=(1,7), Z=(-1,-7), then what is the sum of the coordinates of X?

 Apr 9, 2020

Best Answer 

 #1
avatar+4569 
+1

Based in the question, it is to see that point Z is the midpoint of line XY.

 

(x+1) / 2 = -1    x+1=-2,  x=-3

 

(y+7) / 2 = -7,  y+7=-14,  y=-21

 

(-3,-21)

 Apr 10, 2020
 #1
avatar+4569 
+1
Best Answer

Based in the question, it is to see that point Z is the midpoint of line XY.

 

(x+1) / 2 = -1    x+1=-2,  x=-3

 

(y+7) / 2 = -7,  y+7=-14,  y=-21

 

(-3,-21)

tertre Apr 10, 2020

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