8
algebraWhich scenario is best modeled by a linear function?
A
A car driving at a constant speed
B
Bacteria doubling every hour
C
A ball thrown in the air falling down
D
The area of a square as side length increases
Correct Answer: A
Choice A is the correct answer. Constant rate of change.
- Linear: Requires a constant rate (slope).
- Car: Constant speed = Constant rate of change of distance.
- Bacteria: Doubling is exponential.
- Ball: Gravity causes acceleration (Quadratic).
- Area: (Quadratic).
💡 Strategic Tip: Look for "constant rate" or "per unit" without multipliers.
Choice B is incorrect (Exponential).Choice C is incorrect (Quadratic).Choice D is incorrect (Quadratic).