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Complete the table of values for the power function $f (x) = x^{-1/2}\text{.}$

$x$	$0.1$	$0.25$	$0.5$	$1$	$2$
$f(x)$

$x$	$4$	$8$	$10$	$20$	$200$
$f(x)$

Sketch the graph of $y = f(x)\text{.}$

Write the formula for $f(x)$ with a decimal exponent, and with radical notation.

$f(x)$ is

$x^{-2}$
$x^{0.5}$
$x^{-0.5}$

and also, $f(x)$ is

$\dfrac{1}{\sqrt{x}}$
$-\sqrt{x/2}$
$\dfrac{-\sqrt{x}}{2}$