the proportionality constant is 20 and in 8 ours it will cover 160 miles.
What is proportional relationship?
When two variables are correlated in a manner that their ratios are equal, this is known as a proportional relationship. In a proportional connection, one variable is always a constant value multiplied by the other, which is another way to think of them. The "constant of proportionality" is the term used to describe that constant.
The slope of he given graph will be (30-10)/(2-1) = 20
So here the proportionality constant is 20.
we can write y = 20x
This means in 8 ours it will cover 8*20 = 160 miles.
Hence, the proportionality constant is 20 and in 8 ours it will cover 160 miles.
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