the formula 
; it is used to solve a quadratic equation of the form 
a function of the form y = ax2 + bx + c where a is not equal to zero
| nonlinear function | a function with a variable rate of change that graphs as a curved line |
| quadratic formula | the formula |
| quadratic function | a function of the form y = ax2 + bx + c where a is not equal to zero |
| system of equations | a set of two or more equations that share two or more unknowns |