SOLUTION: I'm trying to help my friend who is in Algebra 2 with her homework. I took Algebra 2 last year, and we seem to have skipped over lesson 5.7, Curve Fitting With Quadratic Models.

Question 237084: I'm trying to help my friend who is in Algebra 2 with her homework. I took Algebra 2 last year, and we seem to have skipped over lesson 5.7, Curve Fitting With Quadratic Models.
First and foremost, how would I write a system of equations represented by a 2 by 2 matrix.
I don't want the answer, I just want to know how to solve it.
So I will use different numbers.
The first row consists of 1 and 2
the second row is 3 and 4.
After that, there's a 1 by 2 matrix where row 1 consists of x and row 2 consists of y and then it equals a 1 by 2 matrix.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The first row consists of 1 and 2
the second row is 3 and 4.
After that, there's a 1 by 2 matrix where row 1
consists of x and row 2 consists of y and then it equals a 1 by 2 matrix.

then it equals a 1 by 2 matrix.
--------------------------------------------
1...2===x
3...4===y
00000000000000000
The 1st row of the 1 by 2 matrix would be 1*x+2*y
The 2nd row of the 1 by 2 matrix would be 3*x+4*y
0000000000000000000000
Cheers,
Stan H.
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