Using a calculator, the quadratic regression equation that fits the data is:
C. y = 2.13x² + 0.13x + 6.39
<h3>How to find the equation of regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
In this problem, the points are:
(-4,40), (-3,28), (-2, 10), (-1, 8), (0,7), (1,10), (2,16), (3,26), (4,40).
Hence the equation is:
C. y = 2.13x² + 0.13x + 6.39
More can be learned about quadratic regression at brainly.com/question/24028025
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