Which relation is a function?

the second option

Step-by-step explanation:

The second one is the function.

Explanation:

In the first one is (4,-2), (-1,3), (-5,-2), (3,3), and (3,7) this would not be a function because there are two of the same numbers in the X- intercept.

It will look like this (X,Y)

The second one is (4,-2), (-1,3), (-5,-2), and (3,7). This is not like the first one which makes it a function. It doesn't matter if you have two or more of the same numbers in the Y- intercept.

The third one is just like the the first one.

What helps me is writing them down like i did for the first and second choice.

Hope this helps. Have a nice day.

answer:

step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b