02: Quadratic Functions 

Domain

________: every x value your function is allowed to be.

downwards

If a is negative, parabola opens ________ and has a maximum (max frowns and is negative)

upwards

If a is positive, parabola opens ________ and has a minimum.

Revenue

________: the total amount of money taken in.

quadratic function

The ________ becomes a U- shaped parabola when graphed.

quadratic formula

The radicand in ________ is the discriminant → % % b²- 4ac % %.

Quadratic formula

________: make the equation= to zero and plug into the following formula.

Revenue

________= selling price x number of items.