Which relation is a function?
•{(4, 2), (3, 3), (2, 4), (3, 2)}
•{(1, 4), (2, 3), (3, 2), (4, 1)}
•{(1, -1), (-2, 2), (-1, 2), (1, - 2)}
• {(1, 2), (2, 3), (3, 2), (2, 1)}

•{(1, 4), (2, 3), (3, 2), (4, 1)}

Step-by-step explanation:

The second answer is the function because all the other choices show the x values repeated and the second answer has all x values unique.

I'm not very good at explaining but that's the answer.

•{(1, 4), (2, 3), (3, 2), (4, 1)}

Step-by-step explanation:

this is correct because the values are not repeted

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation:

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step-by-step explanation:

sdfghjkl; vbnm,