A point has a y-coordinate equal to 0. Where must that point lie?
AOn the y-axis
BAt the origin only
CIn Quadrant I only
DOn the x-axis
Answer & Solution
Correct answer: D. On the x-axis
1. The rule for axis points states that a y-coordinate of 0 places the point on the x-axis.
2. The point only sits at the origin if its x-coordinate is also 0, so it is not guaranteed to be exactly at the origin.
3. Quadrants require both coordinates to be nonzero, so a point with y equal to 0 cannot be inside a quadrant.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 11 "Graphs", section 11.1 Use the Rectangular Coordinate System_
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