Notes, solutions of unit 07, General Mathematics 9, for Punjab Curriculum & Textbook Board (PCTB), Lahore.

* Recall linear equation in one variable.

  • Solve linear equation with rational coefficients.
  • Reduce equations, involving radicals, to simple linear form and find their solutions.
  • Define absolute value.
  • Solve the equation, involving absolute value, in one variable.
  • Define inequalities $( >, <)$ and $( > , <)$
  • Recognize properties of inequalities (i.e., trichotomy, transitive, additive and multiplicative).
  • Solve linear inequalities with rational coefficients.