- #1
Specter
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Homework Statement
Sorry for all the posts lately. This should be the last one for a while.
Solve the following system of linear equations:
##\displaystyle 4x-y=10##
##\displaystyle x+y-3z=8##
##\displaystyle 3x-y+z=12##
Homework Equations
The Attempt at a Solution
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I started with finding if the planes intersect at a single point. ## n \cdot (n_2 × n_3 )## =31, so the planes intersect at a single point.
I've posted a question like this here before but I still don't understand it.
Eqn 1 only has 2 variables so I know I have to do something with that, but I am not sure what. I think If I can isolate a variable in equation 1 I can then use it to find the values for the other equations by substituing in, but I don't know where to start.
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