Tell Whether a Linear Model or a Quadratic Model Is $x ^ { 2 }$

question 210

Multiple Choice

Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of $x ^ { 2 }$ should be positive or negative.
-The amount of water in a pool as it is being filled, as a function of time.

• A) quadratic; negative
• B) quadratic; positive
• C) linear; positive
• D) linear; negative

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Definitions:

Forearm Bone

Refers to one of the two long bones located between the elbow and the wrist, namely the radius and ulna.

Thumb

The first digit of the human hand, positioned oppositely from the other four fingers, enabling grasping and manipulation of objects.

Diaphysis

The core or middle section of an elongated bone.

Bone-Forming Cells

Also known as osteoblasts, these are specialized cells responsible for the synthesis and mineralization of bone during both initial bone formation and later bone remodeling.