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### 21 Cards in this Set

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 expressions that contain the same variables like terms for any numbers a and b, if a=b, then a may be replaced with b substitution property of equality place holders that stand for unknown numbers variables a graphic form using bars to make comparisons bar graph vertical number line y-axis (0,0) origin horizontal number line x- axis (x,y) ordered pair a bar graph whose columns are right next to each other to show the distribution of data. histogram 2nd number in the ordered pair y- coordinate The identity property for addition is.... 0 smaller groups representative of the entire population samples a mathematical sentence that contains the equal sign. equation an equation that contains variables open sentence formed by two number lines that intersect at their zero points coordinate system combinations of variables, numbers and at least one operation algebraic expressions a chart that indicates the number of values in each interval frequency table 1st number in the ordered pair x- coordinate the identity property for multiplication is.... 1 operations that undo each other inverse operation information that has been collected, analyzed, abd presented in an organized way statistics