91Ó°ÊÓ

The domain of a function is the complete set of possible values of the independent variable. The domain is the set of all possible $x$-values that will make the function "work" and will output real $y$-values.

Therangeof a function is the complete set of all possibleresulting valuesof the dependent variable ($y$,usually) after we have substituted the domain.

For the equation, ,make a table to get some points on the graph.

Graph the ordered pairs, and connect them to create a smooth curve. The parabola extends to infinity.

Graph the ordered pairs, and connect them to create a smooth curve. The parabola extends to infinity.

The domain is all real numbers. The range is all real numbers greater than or equal to the minimum value or $\left\{y|yâ‰\yen −\frac{{\displaystyle 1}}{{\displaystyle 8}}\right\}$.