Finding the point where two lines in three-dimensional space intersect

Using the method of Lagrange multipliers to find the extreme values of a function subject to a constraint

Solving a linear system of equations using substitution

Solving a linear system of equations using elimination

Solving a linear system of equations

Writing the augmented matrix for a system of linear equations

Determining if given values are solutions to a system of linear equations

Solving a system of linear equations without using technology

Finding the solution to a system of linear equations by graphing