Step-by-step explanation:
Given c = longest of triange = 15m
Given b = short side of triangle = 9m
By pythagoras' Theorem,

The answer is not it is not because if you use the vertical line test it does not pass and if you plotted the coordinates then x would repeat multiple times
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A because (-5)^2 = 25 + 2(5) =35-1=34
She can make 3 batches. 3 batches will take 3 3/4 cups. If she made 4 it would take 5 cups