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borishaifa [10]
2 years ago
7

Which quadratic function best fits this data?

Mathematics
1 answer:
Vika [28.1K]2 years ago
3 0

The data has a peak at x=5, so we expect it to be modeled with a parabola that opens downward. That is the x² coefficient will be negative.

For x=1, the third choice gives a better approximation to (x, y) = (1, 32) than does the first choice. It is appropriate to choose

... y = -11.41x²+154.42x-143.9

_____

The quadratic regression function of a graphing calculator confirms this choice.

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