In the diagram below \(f(x)\) is a linear function.
The area of the green shaded region (above the \(x\)-axis) is \(12\) square units.
![A parallelogram formed by lines y = f(x) passing through the origin, y = f(x) minus k and x=2, 8. The region above the x axis is shaded green, the region below is shaded blue.](/geometry-of-equations/between-the-lines/images/problem-graph.png)
What is the area of the blue shaded region (below the \(x\)-axis)?
In the diagram below \(f(x)\) is a linear function.
The area of the green shaded region (above the \(x\)-axis) is \(12\) square units.
What is the area of the blue shaded region (below the \(x\)-axis)?