IN MATH: 1. n. the cardinal number meaning one less than one. 2. n. the only number which is neither negative nor positive; the number which is the boundary between negative and positive numbers. 3. n. name of the arbitrary point on a number line after which all other points are numbered; the origin. 4. n. the additive identity. 5. n. the smallest digit. 6. n. the abscissa of the point at which a curve intersects the x-axis; the first coordinate of the x-intercept. EX. What are the curve's zeros?

IN ENGLISH: 1. as defined above. 2.
**unfortunately** some people
think of zero as meaning "nothing." It is the cardinality of a set with nothing
in the set, but "zero" **does not** mean "nothing."

APPLICATION: See list 10 and 130 and 230 and 320.

1. State the zero of y = -x + 5.

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