Find the domain, $x$-intercept(s), $y$-intercept(s), and symmetry of the function

$$\displaystyle f(x) = \sqrt{4-x}.$$

Write the domain in interval notation, and write none in the corresponding blank if no such intercept exists.

    (a) Domain:
    (b) $x$-intercept(s):
    (c) $y$-intercept(s):
    (d) Symmetry: select even odd neither