What are the domain and range of the function on the graph? The domain includes all integers, and the range is y ≥ 0. The domain includes all integers, and the range is y > 0. The domain includes all real numbers, and the range is y ≥ 0. The domain includes all real numbers, and the range is y > 0. On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and curves up and increases in quadrant 1.