Chapter 4: Linear Equations in Two Variables

Chapter 4 Summary

Key Points

  1. Linear equation: ax+by+c=0ax + by + c = 0

  2. Solution = ordered pair (x,y)(x, y) satisfying the equation

  3. A linear equation has infinitely many solutions

  4. Graph is a straight line


Special Cases

EquationType
x=kx = kVertical line
y=ky = kHorizontal line
y=mxy = mxLine through origin

🎉 Chapter 4 Complete!