Answer:
- domain: [0, 7]
- range: [-2, 4]
- is a function? YES
Explanation:
The domain is the horizontal extent, which is from x=0 to x=7.
The range is the vertical extent, which is from y=-2 to y=4.
The curve passes the vertical line test, so the relation IS A FUNCTION.
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The vertical line test asks whether any vertical line intersects the curve at more than one point. If so, the relation is NOT a function.