Graphical method of finding solution of a pair of LE
The pair of e...
Question
The pair of equations x=a and y=b graphically represents lines which are
A
parallel
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B
coincident
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C
intersecting at (b,a)
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D
intersecting at (a,b)
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Solution
The correct option is D intersecting at (a,b) We know that x=a represents a line which is parallel to y-axis and intersecting x-axis at (a, 0).
Similarly, y=b represents a line parallel to x-axis and intersecting y-axis at (0, b).
⇒ x-axis and y-axis are perpendicular to each other, so x=a and x=a, will also be perpendicular to each other and intersecting at (a, b) as shown in the figure.