Discussion OF ex-3.4,|| Cross-multiplication method || Short method to remembering cross-multiplication method by Determinant || Example-14,15

Trick to Remember cross multiplication Formula

Method of cross multiplication

Multiplication by short cut methods

Method of multiplication of two determinants

Solve for x and y using cross multiplication method- 2x+3y+6=0 3x-4y+5=0

Discussion OF ex-3.2 || Substitution method || Algorithm to find solution OF linear equation in two variable by substitution method || Exemplar question discussion

Discussion OF ex-3.3 || Elimination method || Algorithm for elimination method to solve pair OF linear equation in two variable || Exemplar question discussion, ax+by=0 line passing through origin

Solve the equations 3x+5y=9 and 2x+3y=4 by cross multiplication method.

Solve 3x-y-2=0,2x+y-8=0 by method of cross multiplication.