Find the equation of the resulting graph g(x) when: a f(x)=2x + 3 is translated 4 units downwards b f(x) = 3x - 4 is translated 2 units to the left c f(x) = -x² +5r-7 is translated 3 units upwards d_f(x)=x² + 4x - 1 is translated 5 units to the right.