Years 9–10 Mathematics Glossary

3. Replacing a variable with a number or another expression.
4. A bar graph for grouped data.
5. Using powers of 10 to write very large or small numbers
9. A graph of data points that can show the relationships between variables.
10. The chance of an event happening.
12. The amount of space inside a shape.
14. A flip of a shape over a line.
15. A statement showing values that are not equal.
17. The angle from the horizontal looking down.
18. Where the line of a graph crosses an axis.
22. The steepness of a line.
23. Removing brackets by multiplying terms.
27. Events where one does not affect the other.
32. A value far from the other values in the data set.
34. The volume that a 3D space can hold
35. (Exponent) A superscript indicating the number of times a value is multiplied by itself.
36. A fractional ratio that defines the relationship between an angle and the corresponding side lengths of a right-angled triangle
37. How often a value occurs.
38. Events where one outcome affects another.
39. A statement showing two expressions that have equal numerical value.
40. The most common value.
42. The middle value.
43. Direction measured clockwise from north.
46. A mathematical phrase with numbers, variables (pronumerals), and operations.
47. A square root written in exact form that represents an irrational value.
48. The space inside a 3D object.

1. The angle from the horizontal looking up.
2. The ratio of the number of times a specific event or value occurs to the total number of outcomes or trials, i.e. experimental probability.
6. To write an expression as a product of its factors.
7. A turn of a shape around a fixed point.
8. A fixed value that is not variable.
11. Any real number that can be expressed as a fraction a/b, of two integers.
13. The difference between the highest and lowest values.
16. A change to a shape’s position or size.
19. A grid used to plot points.
20. a variable typically represented by a letter or symbol used to represent any number
21. The total area of the outside of a 3D object.
24. Two or more equations sharing common variables that together can be solved to find a common solution.
25. The number used to enlarge or reduce a shape.
26. A symbol that represents an unknown or changing value.
28. The distance around a shape.
29. A number multiplying a variable (pronumeral).
30. A relationship between two variables.
31. Equation An equation where the highest power of the variable is 1.
33. The longest side of a right-angled triangle.
40. The average of a data set.
41. All possible outcomes.
44. The general direction in data.
45. A number or expression that divides exactly into another.