A newly made car will have a model number, a parts number, and a serial number. A model number is assigned by the manufacturer to identify each type of car. A parts number identifies one part of the smaller parts that make up the car. A serial number is unique to each car produced and identifies it.

Which relation is a function?

(parts number, serial number)

(model number, parts number)

(serial number, model number)

(serial number, part number)
I choose the 3rd option but Im not sure if Im correct can someone help ?

Question

A newly made car will have a model number, a parts number, and a serial number. A model number is assigned by the manufacturer to identify each type of car. A parts number identifies one part of the smaller parts that make up the car. A serial number is unique to each car produced and identifies it.

Which relation is a function?

 (parts number, serial number)

 (model number, parts number)

 (serial number, model number)

 (serial number, part number)
I choose the 3rd option but Im not sure if Im correct can someone help ?

anonymous · Answer

@brianayala can u help ?

anonymous · Answer

i don't know. let me look it a little bit

anonymous · Answer

i don't have a clue how to do that. sorry

anonymous · Answer

yeah its correct....

anonymous · Answer

can you tell me how ? @brianayala

anonymous · Answer

think of output and input and the relationship between those two... f(x)=x squared.. model number would be f and the serial number for x that way you can identify the car..

anonymous · Answer

okay I see wat you getting at tanks @brianayala

anonymous · Answer

your welcome...