# Grrrr Help would be appreciated

1. Jan 26, 2006

### thomasrules

for each of the following, find a point on each line:

x=5

:D LOl ok this is what i thought

x+0y-5=0

so direction vector=(0,1)

If I set x to 5 then y should = 0 shouldn't it?

2. Jan 26, 2006

### d_leet

First think about what would happen if you didn't set x equal to 5, say you set x equal to 6 what happens?

You don't set x equal to 5, x is 5 period end of story, that is what you're given all points on that line are of the form (5,a) where a is any real number. You just need one point, I think you can figure it out from here.

3. Jan 26, 2006

### thomasrules

yea I just saw at the back of the book it said (5,6) and I had no idea where that came from

4. Jan 27, 2006

### HallsofIvy

READ the problem! It said "find a point on each line". How many points are there on a line? Since the equation is x= 5, obviously the first coordinate must be 5. What about the second coordinate? What does that equation tell you about y? How does that equation restrict y?