If a point P lies on the line y = -1, find the following a) Its Y-coordinate b) Its X-coordinate
A
x = -1, y = -1
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B
x = -2, y = -1
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C
y = 1, x = -1
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D
y = -1, x can be any real number.
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Solution
The correct option is D y = -1, x can be any real number.
From the above graph we can say that the y-coordinate is constant for all the points on the line y = -1 i.e. -1 and x-coordinate changes from point to point. So, its x - coordinate can be any real number.