The graph shows that the distance a dog runs is proportional to the time the dog is running. You want to use only one plotted point to find the unit rate. Which of the three plotted points could you choose? Select all that apply.
Answers
Given : The graph shows that the distance a dog runs is proportional to the time the dog is running.
You want to use only one plotted point to find the unit rate.
To Find :
Which of the three plotted points could you choose? Select all that apply.
(0,0)
(1 , 7.5)
(5 . 37.5)
Solution:
distance a dog runs is proportional to the time the dog is running.
y = distance
x = time
distance ∝ time
=> y ∝ x
=> y = kx
by putting (0 ,0) we can not get value of k
Hence we can not choose (0,0)
(1 , 7.5)
7.5 = k (1)
=> k = 7.5
y = 7.5x
(5 , 37.5)
37.5 = k (5)
=> k = 7.5
y = 7.5x
Hence (1 , 7.5) or (5 , 37.5) points could be selected
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