No. 1 Determining Whether a Given Ordered Triple is a Solution of a System of Three Equations in Three Variables
No. 5 Using Back-Substitution to Solve a System of Linear Equations
No. 15 Using Gaussian Elimination to Solve a System of Linear Equations
No. 40 Finding the Equation of the Parabola that Passes Through Three Given Points
No. 23 A System of Linear Equations With Infinitely Many Solutions
No. 54 Modeling a Word Problem With a System of Equations