Homework Help: Finding equation of a plane with 3 points

1. Apr 19, 2014

uzman1243

1. The problem statement, all variables and given/known data

2. Relevant equations
N/A

3. The attempt at a solution

The problem is that I dont get the right answer which is:
2x + y + 7z = -3.

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2. Apr 19, 2014

Staff: Mentor

Can you explain what you calculated there?

3. Apr 19, 2014

SammyS

Staff Emeritus
You calculated the cross-product incorrectly.

$\left( -2 + 0 \right)\hat i \ne 0\hat i$

$\hat k \left( \ (1) (-3) - (-2)(-2)\ \right)\ne \hat k \left(-3 + 4 \right)$