Review question

# Can we find a percentage increase using the gradient? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R6345

## Question

The function $y$ is defined by $y=3x-2x^2$. Write down its derivative and show that, when $x=5$, a small increase in $x$ of $p\%$ causes an increase in the magnitude of $y$ of approximately $\dfrac{17p}{7}\%$.