Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope
positive or negative. If quadratic, decide whether the leading coefficient a of x 2 should be positive or negative.
-The height of a ball thrown from the ground, as a function of time.
A) linear; positive
B) quadratic; positive
C) quadratic; negative
D) linear; negative

Question

Quizplus · Accepted Answer

The height of a ball thrown from the ground, as a function of time, follows a parabolic path due to gravity, which is best modeled by a quadratic equation. The leading coefficient is negative because the ball reaches a maximum height and then falls back to the ground, indicating a downward-opening parabola.

Tell Whether a Linear Model or a Quadratic Model Is