1. 2nd Nine Weeks Vocabulary Review Coach Whitlock
Algebra I
2nd Nine Weeks
Vocabulary Review
Coach Whitlock

2. Absolute Value
The positive expression of the distance of a value

3. Algebraic Expression
A collection of numbers, variable, operations, and grouping symbols

4. Best Fit Line
A line that passes close to most of the data points on a scatter plot

5. Coordinate Plane
A plane formed by two real number lines intersecting at a right angle

6. Data
The facts, or numbers, that describe something

7. Equation
A statement formed when an equality symbol (=) is placed between two equal expressions

8. Equivalent Equations
Equations that have the same solution(s)

9. Equivalent Expressions
Two expressions that have the same value for all values of the variable

10. Evaluating
Substituting a number into a variable and solving the mathematical expression

11. Function
A rule that represents the relationship between the input and output in a table

12. Inequality
An open sentence formed when an inequality symbol is placed between two expressions

13. Integers
The set of numbers that includes positives, negatives, and zero

14. Inverse Operations
Two operations that “undo” each other

15. Like Terms
Terms in which the variable factors are the same

16. Literal Equation
An equation that uses more than one letter as a variable

17. Negative Numbers
Numbers represented by the points to the left of the origin on the real number line

18. Numeric Pattern
A sequence of numbers that follow the same rule

19. Opposites
Two points on the real number line that are the same distance from the origin, but on opposite sides of the origin

20. Quadrants
In the coordinate plane, one of the four parts into which the axes divide the plane

21. Rate
Compares two quantities measured in different units

22. Real Numbers
The set of numbers that includes all positives, negatives, and zero

23. Scatter plot
The plot, or graph, of the points that correspond to the ordered pairs in a collection

24. Slope
The number of units the line rises or falls for each unit of horizontal change from left to right

25. Slope-Intercept form
The linear equation when m is the slope and b is the y-intercept
Y = mx + b

26. Variable
A letter that is used to represent one or more numbers

27. Whole Numbers
The set of numbers {1,2,3,4,5,….}

28. X-axis
The horizontal axis in the coordinate plane

29. X-axis
The value of x when y=0; where the line crosses the x-intercept

30. Y-axis
The vertical axis on the coordinate plane

31. Y-intercept
The value of y when x=0; where the line crosses the y-axis

32. Order of Operations PEMDAS Parentheses Exponents
Multiplication / Division (Left to Right)
Addition / Subtraction (Left to Right)

33. Coefficient
The number multiplied by the variable

34. How do you find the mean?
Take the sum and divide it by the number of numbers
It is the same as finding the average of your grades if all are of equal value

35. How do you find the median?
Put the numbers in order from least to greatest. The median is the number in the middle. If there are an even amount of numbers, take the middle two and find the mean.

36. Proportion
Two ratios that are equal
1:2 as 2:4

37. Ratio
The relationship between two numbers or quantities

38. What does < stand for?
Less than

39. What does > stand for?
Greater than

40. What does < stand for?
Less than or equal to

41. What does > stand for?
Greater than or equal to

42. What is the mode?
The number or numbers that occur most often in a list of numbers

43. What is the range?
The difference between the greatest and least (largest and smallest) numbers in a list.

44. Irrational Numbers
The decimal DOES NOT terminate or repeat

45. Natural numbers
Counting numbers

46. Rational numbers
The decimal TERMINATES or has a REPEATING PATTERN

47. Distributive Property
A(B+C) = AB + AC
Multiply the A times everything inside the parentheses

48. Literal Equations An equation involving two or more variables
Ex: a = b + c
Solve for C

49. Constant
A quantity that does not matter