# Homework Help: Change format of equation of plane

1. Oct 18, 2006

### ChickenChakuro

Hi all, I have a plane defined like this:

x = 2 +t
y = 2+t
z = t

How do I put it in the format:
Ax + By + Cz = D?

I feel stupid!

2. Oct 18, 2006

So it is the line through (2,2,0) and parallel to the vector v = (1,1,1)

Last edited: Oct 18, 2006
3. Oct 18, 2006

### ChickenChakuro

Why is it not parallel to the vector v = (1,1,1)?

4. Oct 18, 2006

You may want to investigate this: http://mathworld.wolfram.com/Plane.html" [Broken].

Last edited by a moderator: May 2, 2017
5. Oct 18, 2006

### HallsofIvy

Well, feel only a little bit stupid! That's not the equation of a plane! Since x, y, z depend on a single parameter, t, it is the equation of a one-dimensional figure. Since the functions are linear, it is the equation of a line, not a plane.

6. Oct 18, 2006

### ChickenChakuro

Ah ok, thanks for all the help!

7. Oct 18, 2006

### ChickenChakuro

Guess what? Turns out it was a textbook orthographical error. It was supposed to be "line" not "plane." And I was stumped for so long!