Based on the graph, what are the domain and range of the sine function?

The sine function, y = sin(x), is defined for every real input x, so its domain is (−∞, ∞). Its outputs never go below −1 or above 1, and it reaches both values, so its range is [−1, 1]. Therefore, the correct choice is “domain: (−∞, ∞); range: [−1, 1].”

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