5 The functions f and g are defined for all real values of \(x\) by
$$\mathrm { f } ( x ) = 3 x - 2 \quad \text { and } \quad \mathrm { g } ( x ) = 3 x + 7$$
Find the exact coordinates of the point at which
- the graph of \(y = \operatorname { fg } ( x )\) meets the \(x\)-axis,
- the graph of \(y = \mathrm { g } ( x )\) meets the graph of \(y = \mathrm { g } ^ { - 1 } ( x )\),
- the graph of \(y = | \mathrm { f } ( x ) |\) meets the graph of \(y = | \mathrm { g } ( x ) |\).