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Equations Representing Parallel lines

The equation ...

Question

The equation of line parallel to y-axis is:

(a) x = 1
(b) x + y = 0
(c) y = 0
(d) y = 1

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Solution

Since, the equation of the line parallel to y-axis is of the form x = k, where k is any real number.

So, x = 1 is parallel to y-axis.

Hence, the correct option is (a).

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