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The branch of mathematics that deals with relationships between numbers, utilizing letters and other symbols to represent specific sets of numbers.
A mathematical phrase involving at least one variable and sometimes numbers and operation symbols.
Any mathematical sentence that contains the symbols > (greater than), < (less than), >= (greater than or equal to), <= (less than or equal to).
A pair of numbers, (x, y), that indicates the position of a point on a Cartesian plane.
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