# How do you calculate the slope, x intercept, and y intercept of the following equation: x=-3?

Your equation represents a vertical line passing through $x = - 3$.
The slope is given as $\frac{\Delta y}{\Delta x}$ but $x$ is always $- 3$ so that $\Delta x = 0$ for any $\Delta y$: the expression for the slope gives you a division by zero which is indeterminate.
The only thing is the x-intercept that will be found at exactly $x = - 3$.