Review question

# If we know the sum and product of two numbers, what are they? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R5887

## Interactive diagram

The sum and product of two numbers, $x$ and $y$, are $10$ and $12$ respectively. Form appropriate equations, plot [on graph paper] the corresponding graphs and hence obtain approximate values for $x$ and $y$.

The red rectangle has a horizontal side of length $x$.

The vertical side has length $y$, and the perimeter is fixed at $20$. The area of the red rectangle is shown.