# Thread: PArametric equations

1. ## PArametric equations

Find the parametric equation of a straight line which contains the point t=(1,-1,2) and is orthorgonal to the plane z=3 also determine the point of interception of this line with the plane z=3.

2. Originally Posted by wantanswers
Find the parametric equation of a straight line which contains the point t=(1,-1,2) and is orthorgonal to the plane z=3 also determine the point oof interception of this line with the plane z=3.
Try $(1,-1,2)+t(0,0,1)\,,\,\,t\in\mathbb{R}$ (why?)

Tonio

3. You didn't answer Tonio's question. Do you understand how he got that as the equation of the line? If you don't then that answer does you no good at all.