BASIC , EASY TO UNDERSTAND... EXPRESSION, EQUATION, SIMULTANEOUS EQUATION.

1. Chapter :1
Linear Equation Using two
variables
Mrs Amrita Kulthe, Pune 1
Slides By:
Mrs. Amrita Kulthe
Secondary Teacher
Pune

2. E x p r e s s i o n
Mrs Amrita Kulthe, Pune
2
EXPRESSION

3. e.g. 2x+6=8
where a, b, and c are real numbers and . Linear Equations
are also first-degree equations because the exponent on the
variable is understood to be 1.
a, x, b, c, +, = ( 𝒂𝒙 + 𝒃 = 𝒄)
Linear equation using ONE variable
Mrs Amrita Kulthe, Pune 3

4. What is Linear Equation?
Linear Equations
A linear equation looks like any other equation. It is made up of two
expressions set equal to each other. A linear equation is special because:
It has one or two variables.
No variable in a linear equation is raised to a power greater than 1 or used
as the denominator of a fraction.
When you find pairs of values that make the linear equation true and plot
those pairs on a coordinate grid, all of the points for any one equation lie
on the same line. Linear equations graph as straight lines.
Mrs Amrita Kulthe, Pune 4

7. Here We will Learn General Form Of
Linear Equation using two variables..
𝑎𝑥 + 𝑏𝑦 + 𝑐 = 0 ……Where
1) a, b, and c are REAL NUMBERs
2) a ≠ 0 , b ≠ 0 at the same time… c is constant.
For e.g. 𝟐𝒙 + 𝟐𝒚 + 𝟒 = 𝟎, 𝟑𝒙 − 𝟓𝒚 =9
Question Time:
Why we can not take both values zero at the
same time?

9. SIMULTANEOUS EQUATION : -
Simultaneous equations are two equations,
each with the same two unknowns and are
"simultaneous" because they are solved
together.