Question

matrices to solve systems of equations! help!
-2x-2y=8
5x+2y=-2.

Answer 1

?

Answer 2

The coefficients on the left side form a 2x2 matrix

Answer 3

what you do is you find the inverse of that matrix, then you multiply the left side of the vector 8 over 2 by this inverse to get your answer

Answer 4

OK..

Answer 5

DONT I NEED 1O1O?

Answer 6

what do you mean?

Answer 7

like, for it to be correct it needs to be 0,1_0,1

Answer 8

oh you don't need the identity matrix, but you could use it to find the inverse

Answer 9

thxx.

Answer 10

np