Answer:
C) 3
I played a while with desmos. when I diverge from c=3 it seems impossible to fit the graph even remotely to the point, the lowest point won't fit if it isn't 3
note that it's still just the best approximation out of the 4 given options
If xx and y vary directly and y is 21 when x is 7, find y when x is 5
2 answers:
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