Determine Whether a Linear or Quadratic Function Would Be a More

Multiple Choice

Determine whether a linear or quadratic function would be a more appropriate model for the graphed data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the coefficient a of $x^{2}$ should be positive or negative.
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A) Quadratic; positive
B) Linear; positive
C) Linear; negative
D) Quadratic; negative