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Question
Answer the following question:
Obtain the equation of the line containing the point (2, 3) and parallel to the X-axis.
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Solution
The equation of the line parallel to X-axis is of the type y = b. If this contains the point (2, 3), then the coordinates of this point satisfy this equation.
∴ b = 3
∴ the equation of the line parallel to X-axis and containing the point (2, 3) is y = 3.
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