If y varies directly as x and y is 12 when x is 1.2, what is the constant of variation for this relation?.
2 answers:
Hello,
y=k*x ; if x=1.2,y=12
==>12=k*1.2==>k=12/1.2==>k=10
From the question, we now that y is 12 when x is 1.2
in order to find out the constant of variation for this relation, we just need to substitute it to :
y = k x
12 = k 1.2
k = 12/1.2
k = 10
hope this helps
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