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## anonymous one year ago Use the vertical line test (VLT) to determine if the following graph is a function. Image attached.

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1. anonymous

2. anonymous

if it passes the VLT, it is a function. if it doesn't, it's not a function. what is the issue?

3. anonymous

What's weirding me out is the shape of the graph; it's not connected. I've never seen a graph like this. :/ @pgpilot326

4. anonymous

doesn't matter... could be a piecewise function. for example: $f \left( x \right)=\left\{ \begin{matrix}x,\,\,\,\,\,\, x \le 3\\ -x, \,\,\,\,\,\, x \ge 3\end{matrix} \right\}$

5. anonymous

sorry, first domain should be less than or equal to -3|dw:1441132053809:dw|

6. anonymous

So, I need to look at them as two separate pieces? Therefore, since they are still parallel lines, they both pass the VLT, which means it is a function? @pgpilot326

7. anonymous

Sorry, by parallel I mean vertical, or lines that can pass the VLT.

8. anonymous

Got it! Thank you!!!! @pgpilot326

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