Question

What’s the domain and range of this piecewise function

Answer 1

Domain is set of x values

Range is set of y values

The function begins from (-2,6) and ends at (7,0)

But y values begin from (-2,6) to (1,-3)

Domain

• [-2,7]

Range

• [-3,6]

Answer 2

Domain is the set of x-coordinates.

According to the graph the domain is:

• -2 ≤ x ≤ 7 or x ∈ [-2, 7]

Range is the set of y-coordinates.

According to the graph the range is:

• -3 ≤ y ≤ 6 or y ∈ [-3, 6]