Answer:
[tex]9\left|x\right|+y=4[/tex] represent a function
Step-by-step explanation:
we know that
You can check whether a graph represents a function by using the vertical line test.
The vertical line test states that a graph represents a function if and only if all vertical lines intersect the graph at most once
In this problem we have
[tex]9\left|x\right|+y=4[/tex]
using a graphing tool
This graph does represent a function, since any vertical line intersects the graph exactly once
see the attached figure
therefore
[tex]9\left|x\right|+y=4[/tex] represent a function
