Meaning of the word "linear function" in English

What does "linear function" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

linear function

US /ˈlɪn.i.ɚ ˈfʌŋk.ʃən/
UK /ˈlɪn.i.ə ˈfʌŋk.ʃən/
"linear function" picture

Noun

a function whose graph is a straight line and has a constant rate of change

Example:
The equation y = 2x + 3 is a classic example of a linear function.
In a linear function, the independent variable is raised to the power of one.