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princessjsl22
10.09.2019 •
Mathematics
Given that y is directly proportional to x^2 and that y=2 when x=3 find the value of y when x=6
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Ответ:
y=4/3
y is directly proportional to x^2 is written as
y=kx^2
but from the question, when y=2 , x=3 . putting it in the formula to get the value of k
2=9k . dividing through by 9 to get the value of k
putting it in the general expression
the value of y when x=6
therefore the value of y when x=6 is
4/3
Ответ:
I hope it’s correct!