The value of the constant is 3.2, so the correct option is B.
How to get the value of the constant?
We have a proportional relation of the form:
y = k*x
We want to find the value of k, the constant.
To do that, we can use any of the points shown in the graph.
For example, we can use the first point(0.5, 1.6)
That means that when x = 0.5, we have y = 1.6, replacing that we get:
1.6 = k*0.5
Solving for k:
k = 1.6/0.5 = 3.2
The value of the constant is 3.2, so the correct option is B.
If you want to learn more about proportional relations:
https://brainly.com/question/12242745
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