## 5-1 Identifying Linear Functions

**Objectives:**Identify linear functions and equations & graph linear functions that represent real world situations and give their domain and range.

A function that creates a straight line, therefore a constant rate, is called a

The equation CAN be written in

**linear function**. There is a constant change in both the independent (x) and dependent (y) variables in the table.The equation CAN be written in

**STANDARD FORM -- A**. (A, B, & C must be real numbers and A & B cannot both be zero.)*x*+ B*y*= CIn Standard Form,

**A**

*x*+ B*y*= C- x and y both have exponents of 1.
- x and y are not multiplied together.
- x and y do not appear in denominators, exponents or radical signs.