3. Domain all real numbers
Range: y ≥ 2
4. Domain all real numbers
Range: y ≥ -3
5. Domain -4 < x < 4
Range: -1 ≤ y ≤ 6
What is domain and range?
The domain of a function is the set of all possible input values (x-values) for which the function is defined
The range of a function is the set of all possible output values (y-values) that the function can produce
When open circle is used at the boundary, the value at that point is not included. While using arrow means that the value extends beyond what the graph is showing