| dependent variable | a value or variable that depends upon the independent value |
| exponential function | a nonlinear function in which the independent value is an exponent in the function, as in y = abx |
| function | a kind of relation in which one variable uniquely determines the value of another variable |
| independent variable | a value or variable that changes or can be manipulated by circumstances |
| input | the independent variable of a function—input determines output |
| inverse function | a nonlinear function in which the reciprocal of the independent variable times a constant equals the dependent variable, as in |
| linear function | a function with a constant rate of change and a straight line graph |
| nonlinear function | a function with a variable rate of change that graphs as a curved line |
| output | the dependent variable of a function—output is determined by input |
| parabola | a U-shaped graph which is produced by a quadratic equation |
| proportional function | a function in which the input times a constant equals the output |
| quadratic function | a function of the form y = ax2 + bx + c where a is not equal to zero |
