$\begin{array}{1 1} (a)\; \text{x intercept = (3,0); y intercept = (0, 12) } \\ (b)\; \text{x intercept = (-3, 0); y intercept = (0, -12) } \\ (c)\; \text{x intercept = (-3, 0); y intercept = (0, 12) } \\ (d)\; \text{x intercept = (3, 0); y intercept = (0, -12) } \end{array}$