Grade 10 PowerPoint linear equation cbse

1. LINEAR EQUATIONS IN TO
VARIABLES
GRADE 10
DATE :09 APRIL 2022

2. i) What do you call 2x +3 = 15 ?
ii) What would you call 2x + 3y = 12 ?
iii) What is the standard form of linear equation in two variables ?
iv) How many solutions a linear equation in two variables will have?
v) What is the graph of a linear equation in two variables ?
TESTING OF PREVIOUS KNOWLEDGE
A). ALGEBRAIC EXPRESSION B). LINEAR EQUATION IN ONE VARIABLE C). BINOMIAL
A. TRINOMIAL B. LINEAR EQUATION C. LINEAR EQUATION IN TWO VARIABLES
A). ax = by + c B) ax +c =by C) ax +by +c =0
A) Infinite B) finite C) one
A) Parabola B) straight line C) curved line graph

3. LEARNING OBJECTIVES
• To express a pair of linear equations in two variables in standard or
general form.
• To differentiate between consistent and inconsistent system of linear
equations without drawing the graphs.
• To find the value /s of constants ,given the nature of the solution of a
system of linear equations.

5. Standard form of a pair of linear equations in
two variables.

6. Standard form of pair of Linear equations in two variables:
Express the following system of linear equations in two variables in standard form then find the
values of
1 : 8x +5y = 9 ; 3x + 2y +4 = 0
2. x +y = 10 ; x = y - 4

7. ASSIGNMENT -2
Express the following pair of linear equations in two variables in standard form and write the values
of

8. Relationship between coefficients in a pair of
L.E in two variables.

10. Relationship between coefficients in a pair of L.E
in two variables & graphical and Algebraic
interpretation.

11. STUDENTS’ WORK

13. • CRITICAL THINKING
For what value of k, do the equations 3x – y + 8 = 0 and 6x – ky = –16 represent coincident
lines?

15. WHAT HAVE YOU LEARNT TODAY?
• Standard form of a system of linear equations in two variables.

17. FINDING UNKNOWNS GIVEN THE NATURE OF SOLUTION

19. • ASSESSMENT

20. HOME ASSIGNMENT