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4 votes
I need help with this one please..

I need help with this one please..-example-1
User Discordian
by
6.7k points

2 Answers

6 votes
Wow someone beat me to the answer already. If u need more help let me know
User Rob Latham
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7.5k points
1 vote

Answer:

B

Explanation:

Fortunately we do not need D. The answer of the three that we can see is B.

Every x value except one has 2 y values and that means the vertical line test will not work and that is how a function is defined by there being 1 y for a bunch of xs. This is one of those questions where 1 of 2 opposite answers must be correct. The vertical line test is meant to weed out any 2 ys belonging to 1 x and that is how a function is defined.

It would be nice to know what D said. You should add a comment.

Thank you for putting D up. There is only 1 point that has 1 x value and 1 y value. That is the "vertex." Otherwise every other pair of y values (1 plus and the other minus) have 1 x value. That means that the vertical line test fails.

User SymbolixAU
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7.3k points