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Question

The graphic representation of the pair of equations 2x+4y−15=0 and x+2y−4=0 gives a pair of

A
Parallel lines
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B
Intersecting lines
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C
Coincident lines
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D
None of these
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Solution

The correct option is A Parallel lines
The equations are
2x+4y15=0
x+2y4=0
Here, a1=2,b1=4,c1=15
and a2=1,b2=2,c2=4
a1a2=21=2
b1b2=42=2
c1c2=154
a1a2=b1b2c1c2
The system of equations has no solution.
Graphical representation of the given pair of equations is parallel lines

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