A quadratic function always has...
a. A term with a variable to the first power
b. A term with a variable to the second power
c. A term with a variable cubed
d. A term with a consanant
????
Examples of quadratic functions:
y = 3x²
y = x² - 6x
y = -2x² + 15
y = 5x² - x + 9
Example of functions that are not quadratic:
y = 9
y = 6x
y = -x + 12
y = x³
What term must every quadratic have?
