Question

Awnser if this is a function or not yes or no please.

Answer 1

no

Explanation:

to be a function, the x's can only have one partner. Here, 7 has two partners (7 goes to 20 and also to 18) and the 11 has two partners also. This relation is not a function.

Answer 2

Answer: NO

Explanation:

This is not a function, since there are multiple outputs for ONE input.