The graph shows a proportional relationship between a​ family's distance from home and the time they spent driving. What is the constant of​ proportionality? What does the point​ (1,49) represent?

Step-by-step explanation:

Graph shows the proportional relationship between a family's distance from home and the time spent by them in driving.

Distance from home ∝ time

Distance from home = k(time)

Here 'k' = proportionality constant

For a point (1, 49) on the graph,

49 = k(1)

k = 49 miles per hour

And point (1, 49) will represent 49 miles in 1 hour.

Option (3) is the answer.

i believe the correct answer is b.