Question:
If y-coordinate of a point is zero, then this point always lies
(a) in I quadrant
(b) in II quadrant
(c) on X-axis
(d) on Y-axis
Solution:
(c) If y-coordinate of a point is zero, then this point always lies on X-axis. Because perpendicular distance of the point from X-axis measured along Y-axis is zero.
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