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 = ax 2 + bx + c . Quadratic functions have a degree of two, or a squared term; a linear function does not.

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