Algebraic Intersection of Linear functions

This topic is also referred to as solution of simultaneous equations.

• Two equations in two unknowns:
  • There are two algebraic methods for solving a set of two equations involving two variables
  • Substitution method: we substitute one variable from one equation into the other
  • Elimination method: we eliminate one variable and form one equation
• Three equations in three unknowns: For a set of three simultaneous equations involving three variables, the elimination method is the only practical procedure.