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

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: