Which Function Is It?

Which Function Is It?

Linear or Quadratic

The first two units have been about linear and quadratic equations. This lesson will provide the tools to determine whether an equation, table or graph is a linear or a quadratic function.

Linear and quadratic equations are the types of equations most commonly encountered in high school algebra and in real life applications. They are different from each other in a number of key ways.

Linear equations are usually in the form y = mx+ b . Linear functions have a degree of one, which is the main factor in determining whether it is linear or quadratic. Quadratic equations are usually in the form y = ax2 + bx + c . Quadratic functions have a degree of two, or a squared term; a linear function does not.