If the relationship is linear, then y =kx where k is the proportionality constant.
Solving for k from the information k = y/x = 3/24 = 1/8
The 7 = (1/8)x or x = 56
Another method is just to use a ratio: 24/3 = x/7 or x = 7(24)/3 = 56
Julissa I.
asked 12/02/19if x varies directly as y, and x=24 when y=3, find x when y=7
If the relationship is linear, then y =kx where k is the proportionality constant.
Solving for k from the information k = y/x = 3/24 = 1/8
The 7 = (1/8)x or x = 56
Another method is just to use a ratio: 24/3 = x/7 or x = 7(24)/3 = 56
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