Vertical Line Test

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See attachment.

Question 11

The graph passes the vertical line test. Thus, the graph represents y as a function of x.

Question 12

The graph fails the vertical line test.
Thus, the graph does not represent y as a function of x.

You say?

20210704_101441.jpg
 

It feels good to be right. By the way, I have not posted every type of question listed in Section 1.1 through Section 1.5. I know how to solve most of the questions. I will only post questions that I have forgotten how to solve and/or questions that are totally unfamiliar to me. This explains why we are in Section 1.5 so soon in our journey.
 


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