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Question
Circle x2 + y2 – 4x = 0 touches ______.
Options
Y-axis at the origin
X-axis at the origin
X-axis at the point (3, 0)
Y-axis at the point (0, 2)
MCQ
Fill in the Blanks
Solution
Circle x2 + y2 – 4x = 0 touches Y-axis at the origin.
Explanation:
Centre is (2, 0) and radius = `sqrt((-2)^2 + 0 - 0)` = 2
Hence, circle touches Y-axis at the origin.
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Different Forms of Equation of a Circle
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