Question

5. Which of the following relations describes a function? OA. (0.0).(0.2). (2.0), (2, 2)) OB.((2, 2), (2, 3). (3.2).(3.3) } oct ( 2-1). (2. 1).(3.-1).(3, 1)) op.((-2.-3). (-3.-2). (2. 3). (3.2)) 8)

Answer 1

By definition a function is a relation in which each point from the independent value has only one value in the dependent value.

in this case the relation A is not a function since there are more than 1 image for each point.

Same happens with relation B.

Relation C

Relation D

Relation D describes the behaviour of a function

This is another example of a function