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6 votes
6 votes
PLEASE HELP ME WITH THIS!!!!

PLEASE HELP ME WITH THIS!!!!-example-1
User Josh Clark
by
2.8k points

2 Answers

10 votes
10 votes

Answer:

The last one: {(-2,-2), (0,0), (-4,-4), (0,-2)}

Explanation:

In a function, the x value should not repeat.

The only option that has 2 of the same x values is the last one.

Another way to do this is the vertical line test.

Graph all points, and if two points are on the same vertical line, it's not a function. If all points are on different vertical lines, it is a function.

Hope this helps you understand! :D

User Bernd Kampl
by
3.0k points
20 votes
20 votes

Answer:

Explanation:

User Asonge
by
2.3k points