Question

question 10 of 10
which situation shows a constant rate of change?

a. the outside temperature compared with the time of day
b. the cost of a bunch of grapes compared with its weight
c. the height of a bird over time
d. the number of tickets sold compared with the number of minutes before a football game

Explanation:

• For option A, outside temperature over time (time of day) doesn't have a constant rate of change as temperatures vary non - linearly (e.g., rise in morning, fall in evening, or other patterns).
• Option B: The cost of grapes is usually proportional to its weight (cost = price per unit weight×weight). If the price per unit weight is constant, then the cost changes at a constant rate with respect to weight.
• Option C: The height of a bird over time is not constant as birds fly up and down, change speed of ascent/descent, so the rate of change of height is not constant.
• Option D: The number of tickets sold over minutes before a game may not be constant. Sales could be slow at first, then pick up, or have other non - linear patterns.

Answer:

B. The cost of a bunch of grapes compared with its weight