A train's travel is represented by the equation y = 17.5x, where y represents the total number of miles the train travels in 2 hours.

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.

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try again.