Question

70 points!!!

Find the domain and range of the following relation also determine whether the relation is a function.

Answer 1

Domain:-

• Venus,Mars, Jupiter,Saturn, Neptune,Pluto

Range:-

• 18,29,31,27

Yes it's a function as domains have unique range

Answer 2

Domain = Planet

Range = number of solar congress reps

Function = YES (many-to-one)

Explanation:

Domain : input values ⇒ planet

Range : output value ⇒ number of solar congress reps

Function : A function relates each element of a set with exactly one element of another set (possibly the same set).

One-to-many is not a function.

Many-to-one is a function.

From inspection, we can see that every element in the domain is related to exactly one element in the range. Both Venus and Neptune are related to 18. So this is a many-to-one function.