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Let X, Y and Z be points such that xz/yz=zy/xy=1/2. If xy=(1,7), z=(-2,-3) then what is the sum of the coordinates of X?

 
 Oct 9, 2021
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xz/yz=zy/xy=1/2  Incorrect!!!  cheeky

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1/       XZ/XY = YZ/XY = 1/2    Correct!!!       X(-5, -13) 

 

2/      XZ/YZ = XY/YZ = 1/2     Correct!!!       X(-1/2, 2) 

 

3/      XY/XZ = YZ/XZ = 1/2     Correct!!!       X(4, 17) 

 

All three above cases are correct but, as you can see, the coordinates of X are not the same!

You need to pick one. laugh

 
 Oct 9, 2021
edited by civonamzuk  Oct 9, 2021

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