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If y varies directly as x and y = 14 when x = 7, find x when y is 30

If y varies directly as x and y = 14 when x = 7, find x when y is 30
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3 votes
If y varies directly as x and y = 14 when x = 7, find x when y is 30

User Kharl
by
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1 Answer

2 votes
If directly proportional then y=kx so
14=k x (7) so k=2
Y=kx
Y=2x
30=2 x
Divide both by 2
X=15
User Blacklwhite
by
7.7k points
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