Which set of odered pairs is not a function?​

your answer is A, im sure of

Step-by-step explanation:

Set A (Top Left)

Step-by-step explanation:

A function's inputs is assigned to exactly one output. This means a function's inputs must not repeat.

The input of '3' repeats in the top left set given, so it is not a function.

{(3,1), (2,1), (1,2), (3,2)}

Hope this helps you.

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.