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1 2 3 5 6 4 7 8 9 10 11 12 13 14 15 16 Across 1 The sequence mathematicians have agreed to follow to simplify expressions (5,2,10) 5 In 3x + 5, 3 is the ___ of x. (11) 13 The intersection of two number lines at right angles forms a ___. (10,5) 14 A mathematical phrase that uses variables, numerals, and operation symbols (9,10) 17 15 In 3x + 5, 5 is the ___. (8) from zero on the number line is its ___. (8,5) 16 A rectangular arrangement of numbers in rows and columns (6) 6 The point at which the axes of the coordinate plane intersect (6) 17 A symbol, usually a letter, that stands for a number (8) 7 An example that proves a statement false (14) Down 2 Another word for "multiplicative inverse" (10) 3 The whole numbers and their opposites (8) 4 A number's distance 8 Numbers that are the same distance from zero on a number line but in opposite directions (9) 9 This identifies the location of a point. (7,4) 10 In a coordinate plane, this shows the position above or below the xaxis. (1,10) 11 The horizontal number line in a coordinate plane (1,4) 12 Replace each variable with a number in a variable expression and simplify (8)