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2. a number that can be expressed as a fraction of two integers, where the denominator is not zero
4. a real number that cannot be expressed as a ratio of integers
5. the point where a line or curve intersects the y-axis on a graph
6. the horizontal axis in a Cartesian coordinate system, used to represent the horizontal position of points
7. the difference between the largest and smallest values in a set of data
8. when its tail extends longer to the left side than the right side
11. two quantities, expressions, or objects have the same value or represent the same mathematical object
12. a value that, when multiplied by itself three times, results in the original number
13. a sum of money charged by a lender to a borrower for the use of borrowed money, or the profit earned on an investment

1. a graph that displays the relationship between two numerical variables by plotting data points on a coordinate plane
3. an equation or system of equations has an unlimited number of solutions that satisfy the equation
6. the point where a graph crosses the x-axis
7. to the number 0, which represents the absence of quantity
9. the set of all possible input values (x-values) that a function can accept and produce a valid output
10. measures its steepness and direction on a grap