Solve for $y$ in one of the equations and substitute.

$y = 12 − 2x$

$y=\frac{16}{x}$

$\left(2, 8\right) \text{ and } \left(4, 4\right)$

See part (a).

$\left(3 + i, 6 − 2i\right) \text{ and } \left(3 − i, 6 + 2i\right)$