IN MATH: 1. 1. n. a number line. 2. n. usually the horizontal number line which is perpendicular to the yaxis in a Cartesian coordinate system; the line y = 0. EX. The point (3,0) is on the xaxis and 3 units to the left of 0.

IN ENGLISH: 1. as defined above.
APPLICATION: See list 230.
1. Solve and describe your answer with respect to the xaxis.
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