How can you represent the system of equations with a matrix?

Question

2x+y=9
x-6y=-1

Kindly help me go about solving this. Thank you so much

Answer 1

AX = B
where A is the matrix of coefficients
X is the column matrix with rows x,y
B is the column matrix with rows 9,-1
See
https://www.wolframalpha.com/input/?i=%7B%7B2%2C1%7D%2C%7B1%2C-6%7D%7D*%7B%7Bx%7D%2C%7By%7D%7D%3D%7B%7B9%7D%2C%7B-1%7D%7D