# Homework Help: Transforming Vector Equation in ax + by = c

1. Sep 3, 2011

### Peter G.

There's no information whatsoever about that in my book and my teacher never taught me how to do it. Could anyone maybe give me some tips or point me out a good website? Thanks!

2. Sep 3, 2011

### LCKurtz

You haven't given us enough information to even know what your question is.

3. Sep 3, 2011

### Peter G.

I meant in a general sense, but I can write a question if it helps:

(These should be column vectors, but I don't know how to show them in here:)

(x y) = (2 0) + t(0.7 1)

I have to turn that into a c = ax + by form but I have no idea how to start...

4. Sep 3, 2011

### LCKurtz

Write what x equals, what y equals, and eliminate the t between the two equations.

5. Sep 3, 2011

### Peter G.

But if I substitute for x and y I only have one unknown, do I need two equations?

6. Sep 3, 2011

### LCKurtz

Each component of the vector equation gives you an equation involving t. Eliminate the t variable between those two equations.