Write an equation that gives the proportional relationship of the graph. a) y = 1 8 x b) y = 8x c) y = 9x d) y = 72x

On the graph it says it's 72 and 9 and another one is 144 and 18. Those are the two that I remember.  So all you have to do is divide 72/9=8. 144/18=8 So the proportional relationship is 8.  So the answer is B) y=8x.
                   Hope this helps! :)

The answer is B (Y=8x) I took the test on USA test prep in 7th grade

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.