Scolder2000 Scolder2000

26-03-2015
Mathematics

contestada

PLEASE HELP!!!!!!!!!!!!!!!!!!!!
Variable y varies directly with variable x, and y = 56 when x = 8.

What is the value of y when x = 3?

y = [?]

Respuesta :

konrad509 konrad509

26-03-2015

[tex]y=kx\\\\ 56=8k\\ k=7\\ y=7x\\\\ y=7\cdot3\\ \boxed{y=21}[/tex]

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