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PAIRS OF LINEAR EQUATION IN TWO VARIABLES

CHAPTER NO. 3

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3. Pair of Linear Equations In Two Variables

Equations

Standard Form of Linear Equation in 2 variables:-

x

a

b

= 0

x + 3

y + 3 = 0

x2 + 4x + 3 = 0

y2 + 5y + 9 = 0

x + y + 5 = 0

3x + 5y + 9 = 0

Two Variables

Linear

Degree 1

y

+

= 0

Real numbers

a ≠ 0

b ≠ 0

and

WHAT IS AN

EQUATION?

A MATHEMATICAL STATEMENT WITH

ATLEAST ONE VARIABLE AND AN ‘=‘ SIGN

WHAT IS A LINEAR

EQUATION?

AN EQUATION WITH

IS IT AN

EQUATION?

IS IT AN

EQUATION?

IS IT AN

EQUATION?

IS IT AN

EQUATION?

IS IT AN

EQUATION?

IS IT AN

EQUATION?

HIGHEST POWER

OF VARIABLE

2 variables

THERE

CO-EFFICIENT

1

1

1

1

1

1

+

c