Precalculus 8-01 Name: ___________________
Created by Richard Wright – Andrews Academy To be used with Richard Wright’s Precalculus
Precalculus
8-01 Nonlinear and Linear Systems
System of Equations
• Several equations with the ___________________solution
Substitution
1. ___________________one equation for a variable
2. ___________________this expression into the other equation
3. ___________________the new equation
4. ___________________the solution back into the 1st equation and solve
5. ___________________your answers!
Solve {−2𝑥 + 𝑦 = 5
𝑥2+ 3𝑥 − 𝑦 = 1
Graphical Method
• ___________________both equations on ___________________coordinate plane
• The points of ___________________are the solutions.
Solve graphically
{𝑥2− 𝑦 = 5
−𝑥 + 𝑦 = −3