Understanding Linear and Quadratic Expressions

This video tutorial explains the differences between linear and quadratic expressions. It covers the basic definitions, examples, and applications of each type of expression. Linear expressions involve variables and operations like addition, representing constant rates. Quadratic expressions include an x squared term and are used in problems involving rates or areas. The video also clarifies the distinction between expressions and equations, emphasizing that expressions lack equal signs. Examples include calculating truck rental costs as a linear expression and garden area as a quadratic expression. The tutorial concludes with a comparison of linear and quadratic expressions.

What characteristics define a quadratic expression?

How do you represent the area of a square garden with a brick border?

Identify whether the expression 7X is linear or quadratic and explain why.