- System of Equations- a set of 2 or more equations.
- Graph of a Linear Inequality- The solutions of a linear inequality, forming a half-plane on one side of a line and may or may not also form the line itself.
- Linear Function- An equation in which the graphs of the solutions form a (non-vertical) line.
- Linear Inequality- An inequality in two variables for which the graphs of the solutions form a half-plane on one side of a line and may or may not also form the line itself.
- Slope- The steepness (the ratio of rise to run) of a line, which may be calculated by finding the ratio of the difference between the y values of two points on the line to the difference between the corresponding x values of those two points on the line.
- Slope-Intercept Form- One method used to write an equation of a line; uses the form y = mx + b, where m is the slope and b is the y-intercept.
- Standard Form of a Linear Equation- One method used to write an equation of a line; uses the form Ax + By = C.
- Solution- A number (or ordered pair of numbers, or set of numbers) that produces a true statement when substituted for the variable(s) in an equation or inequality.