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Only for a vertical line (or line with undefined slope, if you prefer)
The '''X-axis''' is the [[horizontal]] axis on a [[coordinate plane]], as opposed to the [[vertical]] axis, or [[y-axis]]. The [[point]] at which a [[line]] crosses the x-axis is referred to as the [[x-intercept]]. The [[y-intercept]] is defined as infinity.
The '''X-axis''' is the [[horizontal]] axis on a [[coordinate plane]], as opposed to the [[vertical]] axis, or [[y-axis]]. The [[point]] at which a [[line]] crosses the x-axis is referred to as the [[x-intercept]].
[[Category:Geometry]]
[[Category:Geometry]]