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# Topic 2 Vocabulary

### Integers & Rational Numbers

DefinitionTerm
the distance between a number and zero on a number line |5|=5 |-5|=5 absolute value
the size of a number, another word for absolute value magnitude
two numbers that are the same distance from zero on a number line, but in different directions opposites
a number that cannot be written as a fraction, as a decimal it will NOT terminate or repeat irrational number
counting numbers natural numbers
all counting numbers and zero whole numbers
all positive whole numbers, zero, and their negative opposites integers
a number that can be written in fraction form (positive or negative), as a decimal it WILL either terminate or repeat rational number
formed by the intersection of a horizontal (↔) number line (x-axis) and a vertical (↕) number line (y-axis) creating a grid to find locations using two coordinates coordinate plane
the location of a point from the origin on the coordinate plane (x,y) • the x-coordinate shows the location left or right • the y-coordinate shows the location up or down ordered pair
the point on a coordinate plane where the x-axis and y-axis intersect (0, 0) origin
the horizontal (↔) number line on the coordinate plane x-axis
the vertical (↕) number line on the coordinate plane y-axis
the four regions of the coordinate plane created by the intersection of the x-axis and y-axis quadrants
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