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| The set of whole numbers and their opposites {. . .-2, -1, 0, 1, 2. . .}. |
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| Any integer that is less than zero. |
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| Any integer that is greater than zero. |
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| The absolute value of a number a is its The distance the number is from zero on a number line. Example: The absolute value of -2 is 2. |
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| A two-dimensional flat surface that extends in all directions. |
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| A plane, also called a coordinate grid or coordinate system, in which a horizontal number line and a vertical number line intersect at their zero points. |
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| The horizontal number line on a coordinate plane. |
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| The vertical number line on a coordinate plane. |
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| The point (0, 0) in a coordinate plane where the x-axis and the y-axis intersect. |
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| One of four regions into which the x- and y-axes separate the coordinate plane. |
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| A pair of numbers used to locate a point in the coordinate plane. An ordered pair is written in the form (x-coordinate, y-coordinate). |
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| The first number in an ordered pair. It corresponds to a number on the x-axis. |
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| The second number in an ordered pair. It corresponds to a number on the y-axis. |
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| Two integers are opposites if they are represented on the number line by points that are the same distance form zero, but on opposite sides of zero. The sum of two opposites is zero. |
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Definition
| The opposite of an integer. The sum of an integer and its additive inverse is zero. |
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