Question

Identifying Domain and Range

What is the domain?
O (-0Ė4)
O (-4Ė4)
O (0Ė4)
DONE✔
What is the range?
0 (-00Ė00)
O(-0,4]
O [4,4]
O (0Ė4)
DONE✔
-2
2
-2
2
X

Answer 1

• domain: (a) (-∞, ∞)
• range: (b) (-∞, 4]

Explanation:

You want the domain and range intervals applicable to the function shown in the graph.

Domain

The domain is the horizontal extent of the graph. The arrows on the ends of the curve indicate the graph extends to infinity in both directions. The graph shows no holes or discontinuity between its left and right ends, so ...

the domain is (-∞, ∞), choice A

Range

The range is the vertical extent of the graph. The arrows on the ends of the curve indicate the graph extends down to negative infinity. The maximum value the function has is 4, so ...

the range is (-∞, 4], choice B

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