Question

Indentify the range of the the function {(2,5), (3,8), (4,11)}

Answer 1

The domain of a function is the complete set of possible values of the independent variable (input values).

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain (output values).

For the function {(2,5), (3,8), (4,11)} you have:

• the domain is {2,3,4};
• the range is {5,8,11}.

In other words, the function {(2,5), (3,8), (4,11)} can be written as

• f(2)=5;
• f(3)=8;
• f(5)=11.

The values 2, 3, 4  are input values (the domain) and values 5, 8, 11 are output values (the range).

Answer: the range is {5,8,11}

Answer 2

Range:  {5,  8, 11}

Hope it helps