Solving Systems w/Matrices

Solving Systems w/Matrices

Flex Learning Day Assignment

Systems of Eqns with Matrices

Notice the eqns are written in standard form. Every coefficient must be represented and in the corresponding row and column. If a variable is not present in an eqn, the coefficient would be ZERO.

Can't Divide by a Matrix

Instead of dividing by the coefficient matrix, A, MULTIPLY BY THE INVERSE to solve for the variable matrix, X

It is ALWAYS the inverse of the coefficient matrix multiplied by the constant matrix.

Multiple Choice

Write the matrix equation for the system.

Fill in the Blanks

Multiple Choice

Use the determinant of -7 to find the inverse for the matrix.

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Identify the coefficient matrix for the following system.