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Find Cartesian equation of plane containging line with parametric equations and point

1. The problem statement, all variables and given/known data
Question is
"The Cartesian equation of the plane containing the line x=3t , y =1+t , z=2-t and passing through the point (-1,2,1) is?"

2. Relevant equations

$$\begin{array}{l} n \bullet (r - r_0 ) = 0 \\ < n_1 ,n_2 ,n_3 > \bullet < x - x_0 ,y - y_0 ,z - z_0 > = 0 \\ \end{array}$$

3. The attempt at a solution

direction vector is < 3 , 1, -1>

$$\begin{array}{l} < - 1,2,1 > \bullet < x - 3,y - 1,z + 1 > = 0 \\ - x + 2y + z = 2 \\ \end{array}$$

But this doesn't appear to be right. Could someone help me out here please. I'm at a lost on how to do this. Thanks

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