chapter 12
definitions
- Axes- The two perpendicular lines of a coordinate plane that intersect at the origin.
- Coefficient- The number that is multiplied by the variable in an algebraic expression.
- Constant- A value that does not change.
- Coordinate Plane- A plane formed by the intersection of a horizontal number line called the x-axis and a vertical number line called the y-axis.
- Coordinates- The numbers of an ordered pair that locate a point on a coordinate graph.
- Dependent Variable- The output of a function; a variable whose value depends on the value of the input, or independent variable.
- Equations- A mathematical sentence that shows that two expressions are equivalent.
- Independent Variable- The input of a function; a variable whose value determines the value of the output, or dependent variable.
- Negative Number- A number less than zero.
- Ordered Pair- A pair of numbers that can be used to locate a point on a coordinate plane.
- Origin- The point where that x-axis and y-axis intersect on the coordinate plane; (0,0)
- Positive Number- A number greater than zero.
- Quadrants- The x- and y-axes divide the coordinate plane into four regions. Each region is called a quadrant.
- Scale- The ratio between two sets of measurements.
- Variable- A symbol used to represent a quantity that can change.
- X-Axis- The horizontal axis on a coordinate plane.
- X-Coordinate- The first number in an ordered pair; it tells the distance to move right or left of the origin, (0,0).
- Y-Axis- The vertical axis on a coordinate plane.
- Y-Coordinate- The second number in an ordered pair; it tells the distance to move up or down from the origin, (0,0)