Taylor

2. any value for the variable makes the equation true
5. typically placed between two values being compared and signifies that the first number is less than the second number.
6. indicates that two quantities or expressions have the same value or represent the same mathematical object.
9. a relationship between sets of values
10. the steepness of a line
11. the horizontal number line in a two-dimensional Cartesian coordinate system.
13. a real number that cannot be expressed as a ratio of two integers
15. something that can be represented by a straight line, or that preserves the structure of a straight line.

1. a statement of equality between two expressions.
3. there is no value for the variable that makes the equation true.
4. there is only one value for the variable that makes the equation true
7. a number is larger than another number
8. any number that can be expressed as a fraction, or ratio, of two integers, where the denominator is not zero
12. a symbol, typically a letter, used to represent a number that can change or vary in value.
14. the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.