IN MATH: 1. 1. n. a number line. 2. n. usually the horizontal number line which is perpendicular to the y-axis in a Cartesian coordinate system; the line y = 0. EX. The point (-3,0) is on the x-axis 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 x-axis.

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