Show us how you've done the second one and we'll comment.
Hi, it's been awhile since I've been on here but I've now officially started Linear Algebra.
There are two problems in my homework I cannot solve. They are the following:
1. Find the equation of the form that passes through points and using elementary row operations on a matrix.
2. Find the equation of the parabola that pass through (0,3), (1,9) and (2,3) using elementary row operations on a matrix.
I believe I have the second problem solved but I am unsure of my answer. Thank you for looking at this! =)
Actually, I think I may be on my way to answering them both. It's just that I don't know what to do when I get to a certain point. Here goes:
for the y = mx + b problem....
I set it up as and .
I set up a matrix that looks like:
4 1 -1
1 1 8
I then set it up in rref form using about 8 steps, until I come out to a matrix that looks like...
1 0 -3
0 1 11
However, I don't really know what this tells me. I don't know how to check it, or set it up in an equation form. I get to the same point in the quadratic problem.