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No its in variations, this is from year 2002, question 19, paper 1, there is another question like this, maybe you could help in that
y is directly propotional to x^2
It is known that y=10 for a particular value of x
Find the value of y when this value of x is halved
y is directly propotional to x^2
It is known that y=10 for a particular value of x
Find the value of y when this value of x is halved