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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 = [?]

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 = [?]
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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 = [?]

User Bakary
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7.9k points

1 Answer

2 votes

y=kx\\\\ 56=8k\\ k=7\\ y=7x\\\\ y=7\cdot3\\ \boxed{y=21}
User Tilendor
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