Solving Pair of Linear Equations using Cross-Multiplication Method

This video tutorial introduces the cross multiplication method for solving pairs of linear equations, building on previously covered elimination and substitution methods. It explains the concept of coefficients and constants in equations, derives the cross multiplication formula, and demonstrates its application to find the values of variables. The tutorial concludes by comparing the three algebraic methods and confirming the consistency of results across them.

Which method is introduced in this session for solving linear equations?

• Cross multiplication method

• Graphical method

• Matrix method

• Quadratic method

What are the numbers attached to variables in an equation called?

• Constants

• Factors

• Coefficients

• Exponents

In the cross multiplication method, which terms are used in the denominator for the X variable?

• A1 and A2

• B1 and B2

• C1 and C2

• B1C2 and C1B2

What is the main operation used in the cross multiplication method?

• Addition

• Division

• Subtraction

• Cross multiplication

How do you solve for X using the cross multiplication method?

• By dividing the coefficients

• By adding the coefficients

• By subtracting the constants

• By cross multiplying and solving the equation

What is the value of X obtained using the cross multiplication method in the example?

• 3

• 4

• 2

• 1

Which of the following methods is NOT used to solve linear equations in the session?

• Graphical method

• Cross multiplication method

• Substitution method

• Elimination method