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avatar+221 

Find the value of x such that 
is a vector parallel to the plane through the points A = (0,1,1), B= (1,1,0), and C = (1,0,3) .

 Oct 23, 2020
 #1
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x = -7.

 Oct 24, 2020
 #2
avatar+221 
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hi, 

could you please explain how you got that answer

littlemixfan  Oct 24, 2020
 #3
avatar+111626 
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NOTE: I know almost nothing about vectors:

 

BUT

 

Here is a youtube for getting the equation of the plane that passes through 3 specific points

 

https://www.youtube.com/watch?v=uvR2q2LQxNc

 

And here is one to help you find the angle between two vectors (you need an angle of 90 degrees.

 

https://www.youtube.com/watch?v=QWIZXRjMspI

 

I muddled through these and possibly came up with an answer but I expect you are capable of doing it just as easily as me.

Try doing the video examples then try doing your own one.

 Oct 24, 2020

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