Consider the exponential equation $y= -e^{x}$.

(a) Determine whether its graph has a horizontal asymptote or a vertical asymptote. In each answer blank enter an equation $x = k$ or $y = k$ for some number $k$, or, enter NONE if its graph does not have that type of asymptote.
The graph has a vertical asymptote with equation help (equations)
The graph has a horizontal asymptote with equation help (equations)

(b) Determine whether its graph has an x-intercept or a y-intercept. In each answer blank enter a point $(a,b)$ including parentheses, or, enter NONE if its graph does not have that type of intercept.
The graph has an $x$-intercept at the point help (points)
The graph has a $y$-intercept at the point help (points)