Suppose y varies directly with x, and y = 15 when x = 3. What is y when x = 12?
1 answer:
Answer:
y = 60 when x = 12
Step-by-step explanation:
Direct variation is
y = kx
15 = k3
Divide by 3
15/3 = k
5 =k
y = 5x
Let x = 12
y = 5*12
y = 60
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