Somebody check if they are correct or not you

You got the diagram correct, but remember that in order for it to be a function  all the x's (left) have to have a different y (right)

Hope this helped! Let me know if I need to clarify anything or explain more in depth!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values