Write the system of equations 2x12x2 = 1 7x13x2 = 2 in matrix form. By finding an appropriate inverse, solve for x1 and x2.

Can any matrix be written as a system of linear equations? Explain why or why not. Explain how to write that system of equations.

Determine if the statement is true or false. If the statement is false, then correct it and make it true. For the product of two matrices to be defined, the number of rows of the first matrix must equal the number of columns of the second matrix.

Explain the difference between the row-echelon form and the reduced row-echelon form of a matrix.

Can any system of linear equations be written as an augmented matrix? Explain why or why not. Explain how to write that augmented matrix.

Solve for x,y,z and w in the matrix equation wxyx=-432-1+2ywzx.

Write a system of three equations in three variables with an infinite number of solutions.

Explain how to decide which row or column you will use to expand a 33 determinant.

Solve using a matrix 4x + 6y = -182x - 4y = 12

Solve with matrices. 5x−3y=18 and 2x+7y=−1 Indicate each matrix with the vertical bar (|) symbol from the keyboard at the beginning and end of each row.