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Hi, I have been doing my webworks and I seem to be having problems with this remaining question. Any help would be greatly appreciated.

Find an equation for the plane containing the points A(0,4,2) and B(-5,0,7)and perpendicular to the plane 2x+2y+4z=3

Questioner: Thomas

Country: Quebec, Canada

Category: Advanced Math

Private: No

Subject: Help with homework questions

Question: Hi, I have been doing my webworks and I seem to be having problems with this remaining question. Any help would be greatly appreciated.

Find an equation for the plane P1 containing the points A(0,4,2) and B(-5,0,7)and perpendicular to the plane P2 : 2x+2y+4z=3

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1. AB is a vector in the plane P1.

2. <2,2,4> (or <1,1,2>, just as good) is normal to the second plane P2, therefore parallel to P1.

3. Their cross-product will be normal to P1.

You should be able to do it now.

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