Question

Identify the range of the function.
A [-4,0]
B (-4,0)
C [-3,1]
D (-3,1)

Answer 1

Answer: [-4, 0] which is choice A

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Reason:

lowest point is when y = -4

highest point is when y = 0

The range is any value of y between these values, including the endpoints themselves. We say the range is
`-4 \le y \le 0` which condenses to the interval notation [-4, 0]

Use square brackets to include the endpoints.

If there were open holes at the highest and lowest points, then we would use curved parenthesis instead.