Reading a line and area bounded by lines

The line \(y=px+q\) passes through \((-2,0)\) and \((0,2)\).

1. Find \(p\) and \(q\).[2]
2. A point \((a,6)\) lies on the line. Find \(a\).[2]
3. State the equation of the vertical line passing through the point found in (b).[1]
4. Find the area bounded by the line, this vertical line, and the \(x\)-axis.[2]