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## Homework Statement

Determine the Cartesian equation for the plane with the following:

1) through the points (1,2,1) and (2,1,4)

**2) parallel to x-axis**

## Homework Equations

Parametric Equations

Vector Eqs

Plane Eqs

## The Attempt at a Solution

I basically understand how perpendicular works, but not sure how paralell will change this situation. I know that I will get a direction vector out of this from the first two points, which will be (1,-1,3), but then I don't know what to do after..