$y$ is directly proportional to the square of $x$. Given that $y=12$ when $x=0.2$, find the

Question

$y$ is directly proportional to the square of $x$. Given that $y=12$ when $x=0.2$, find the equation for $y$ in terms of $x$. It is known that $y=p$ for a particular value of $x$. Describe the change in $y$ when the value of $x$ is doubled.

Accepted Answer

(a) $y=300x^2$. (b) $y=4p$, four times the original value.

Direct Variation Involving Squared Quantities

Direct Variation Involving Squared Quantities

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