Trigonometry Examples

$f (x) = - 4 x + 9$

Step 1

The word linear is used for a straight line. A linear function is a function of a straight line, which means that the degree of a linear function must be $0$ or $1$ . In this case, The degree of $f (x) = - 4 x + 9$ is $1$ , which makes the function a linear function.

$f (x) = - 4 x + 9$ is a linear function