I need to match them but I don't know how

Given:

The system of equations is:

The given matrices are , , .

To find:

The correct names for the given matrices.

Solution:

We have,

Here, coefficients of x are 1 and 1 respectively, the coefficients of y are 3 and -3 respectively and constant terms are 5 and -1 respectively.

In the x-determinant, the coefficients of x are in the first column and the constant terms are in the second column. So, the x-determinant is:

In the y-determinant, the constant terms are in the first column and the coefficients of y are in the second column. So, the y-determinant is:

In the system determinant, the coefficients of x are in the first column and the coefficients of y are in the second column. So, the system determinant is:

Therefore, the first matrix is y-determinant, second matrix is x-determinant and the third matrix is the system determinant.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer