Question

PLEASE HELP ME 30 POINTS DONT GUESS BECAUSE IT IS VERY IMPORTANT!!!!!!

An ordered pair is
A.the output (y) value of the relation
B. the input (x) value of the relation
C. a set of points that pair input values with output values
D. x and y values written in the form (x, y)


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?
A. (parts number, serial number)
B.(model number, parts number)
C.(serial number, model number)
D. (serial number, part number)

Answer 1

a pair of elements a, b having the property that ( a, b) = (u, v ) if and only if a = u, b = v.

Answer 2

First one is D, because an ordered pair is (x,y)