Question:
Find the equation of the line passing through the point (2, 4) and perpendicular to the x - axis.
Solution:
Given: The line is perpendicular to $x$-axis and passes through $(2,4)$
The equation of the line perpendicular to the $x$-axis $(y=0)$ can be represented as $x=$ c, where $c$ is a real constant.
Now, this line passes through (2,4).
∴ c = 2
The required equation is x = 2
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