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## Homework Statement

If the line "l" is given by the equations 2x-y+z=0, x+z-1=0, and if M is the point (1,3,-2), find a Cartesian equation of the plane.

a) passing through M and l

b) passing through M and orthogonal to l

## Homework Equations

(r-r

_{0})n=0

## The Attempt at a Solution

I expanded the equation above, so i got rn=r

_{0}n

then, (x,y,z)n=(1,3,-2)n.

And i don't know how to get the normal vector from those two equations

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