Question

What is the range of the function graphed below?

Answer 1

B.) I believe is the correct answer.
 A closed circle on a graph means that that value is included, meaning a less than and equal to sign or a greater than or equal to sign. 
An open circle on a graph means that the value is not include, meaning a greater than or less than sign. 

Hope this helps! 

Answer 2

The answer is -3<y≤3