Math

5. an element, feature, or factor that is liable to vary or change.
6. The beginning or starting point of a graph
7. Being separated equally.
8. a two-dimensional space or flat surface that extends indefinitely
11. a trend that starts with a sharp drop and is followed by a dramatic rise
12. an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes.
14. the total amount resulting from the addition of two or more numbers, amounts, or items.
15. A fixed and well-defined number or other non-changing mathematical object.

1. An algebraic expression of the sum or the difference of two terms.
2. involving the second and no higher power of an unknown quantity or variable.
3. The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formula and equations.
4. not denoting, involving, or arranged in a straight line.
9. a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression
10. the number of times a data value occurs
13. a chart that plots the distribution of a numeric variable's values as a series of bars