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Question
Obtain the equation of the line containing the point: (2, 4) and perpendicular to the Y−axis.
Solution
Equation of a line perpendicular to Y-axis i.e., parallel to X-axis, is of the form y = k.
Since, the line passes through (2, 4).
∴ k = 4
∴ the equation of the required line is y = 4.
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