Today, Alonso walked 1 mile in 0.5 hours.

Assume he continues at this pace, complete the table in the interactive, and graph the relationship. From the graph, which of the following are true? Check all that apply.
The line passes through the origin.
The relationship is proportional.
Alonso walks 0.5 miles per hour.
There is no constant of proportionality.

1 answer

To analyze Alonso's walking, let's calculate his walking rate and complete the table of distance versus time.

  1. Rate of walking:
    Alonso walked 1 mile in 0.5 hours. \[ \text{Rate} = \frac{\text{Distance}}{\text{Time}} = \frac{1 \text{ mile}}{0.5 \text{ hours}} = 2 \text{ miles per hour} \]

  2. Completing the table:
    If Alonso walks at a constant pace of 2 miles per hour, we can calculate the distance for various times. For example:

    • At 0.5 hours, distance = 1 mile
    • At 1 hour, distance = 2 miles
    • At 1.5 hours, distance = 3 miles
    • At 2 hours, distance = 4 miles

    This would create a table like:

    | Time (hours) | Distance (miles) | |--------------|------------------| | 0 | 0 | | 0.5 | 1 | | 1 | 2 | | 1.5 | 3 | | 2 | 4 |

  3. Graphing the relationship:
    When graphed, the points will form a straight line passing through (0,0) and increasing linearly, demonstrating a consistent rate of distance covered over time.

  4. Evaluating the statements:

    • The line passes through the origin.
      True: Since at 0 hours, the distance is 0 miles (0,0).

    • The relationship is proportional.
      True: The relationship is linear and the distance increases at a constant rate (2 miles per hour), thus showing a constant ratio.

    • Alonso walks 0.5 miles per hour.
      False: He walks 2 miles per hour, not 0.5.

    • There is no constant of proportionality.
      False: The constant of proportionality is 2 (miles/hour).

Thus, the true statements are that the line passes through the origin and the relationship is proportional.