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Question of-the

3.4 Two-Variable Data & Models - Line of best fit
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The figure presents a sterplot in the x y plane. The numbers 0 through 6, in increments of 1, are indied on the x axis. The numbers 0 through 20, in increments of 2, are indied on the y axis. There are 12 data points in the sterplot. The data points are in the shape of a parabola that opens upward. The data points begin on the y axis at 20, and trend downward and to the right until they reach a first low point with coordinates 2 point 5 comma 5 and a second low point with coordinates 3 comma 5. Then the data points trend upward and to the right until they reach the last point with coordinates 5 point 5 comma 20.

Of the following, which is the best model for the data in the sterplot?

A.

y equals, 2 x squared, minus 11 x, minus 20

B.

y equals, 2 x squared, minus 11 x, plus 20

C.

y equals, 2 x squared, minus 5 x, minus 3

D.

y equals, 2 x squared, minus 5 x, plus 3