Question

select the equations that are written in function notation.
show your work here

$f(x)=3x+6$ $y=2x-6$
$y=-x-9$ $f(x)=4x-7$
$-7x+5$ $y=-7x-10$

Explanation:

Function notation uses the form $f(x)$ to represent the output of a function for an input $x$, explicitly denoting the relationship as a function. Equations using $y$ are not function notation, and $-7x+5$ is not an equation.

Answer:

• $f(x)=3x+6$
• $f(x)=4x-7$