1. A line that intersects two or more lines. Transversal

2. A collection of objects or elements Set

3. A letter that represents a value that can change or vary. Variable

4. In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs. Pythagorean Theorem

5. A way to show all the possible outcomes. Tree Diagram

6. The set containing all the elements of both sets. Union

7. A method of writing very large or very small numbers by using powers of 10. Scientific Notation

8. The type of a change a line makes and the rate it moves. Rate of Change

9. A function whose graph is a straight line. Linear Function

10. An ordered list of numbers. Sequence

11. The value of x and y where the line crosses the axis. Intercept

12. The opposite of a number Additive Inverse

13. An equation whose solutions form a straight line on the coordinate plane. Linear Equation

14. The set containing the elements that are common to both sets. Intersection

15. The set of all elements not in the original set. Complement

16. An object in a set. Element

17. A set contained within another set. Subset

18. A mathematical sentence using >,, or,, or < whose graph is a region with a straight- line boundary. Linear Inequality

19. An ordered list of numbers in which the difference between consecutive terms is the same. Arithmetic Sequence

20. Repeating Recursive

21. Shows relationships among sets using circles to represent each set. Venn Diagram

22. If there are m ways to choose the first item and n ways to choose the second after the first has been chosen, then there are m · n ways to choose all items. Fundamental Counting Principle

23. A number from 0 to 1 that describes how likely and event is to occur. Probability

24. One of two equal factors of a number. Square Root

25. Any number that can be expressed as a ratio of two integers. Rational Number

26. A mathematical sentence that shows the relationship between quantities that are not equivalent. Inequality

27. The reciprocal of a number. Multiplicative Inverse

28. A measure of the steepness of a line on a graph. Slope

29. A straight line that comes closest to the points on a scatter plot. Line of best fit

30. A pairing between two sets of numbers. Relation

31. A set of two or more linear equations that contain two or more variables. System of linear equations

32. Two or more terms that have the same variable raised to the same power. Like terms

33. The symbol used to represent the nonnegative square root of a number. Radical

34. A number that indicates how many times a base is used as a factor. Exponent

35. A number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal. Irrational Number

36. All digits that are known with certainty. Significant Digits

37. An input-output relationship that has exactly one output for each input. Function

38. If one group contains m objects and a second group contains n objects, and the groups have no objects in common, then there are m + n total objects to choose from. Addition Counting Principle