$\"\"$

The function is $\"\"$ .

Consider the first expression $\"\"$ for $\"\"$ .

Construct a table for different values of $\"\"$ , where $\"\"$ .

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Observe the expression :

$\"\"$ for $\"\"$ .

Since $\"\"$ is not equal to $\"\"$ , represent the point $\"\"$ with a circle.

$\"\"$

Consider the second expression $\"\"$ for $\"\"$ .

Construct a table for different values of $\"\"$ , where $\"\"$ .

\ \

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Observe the expression :

$\"\"$ for $\"\"$ .

Since $\"\"$ is equal to $\"\"$ , represent the point $\"\"$ with a dot.

Graph:

Graph the function $\"\"$ for $\"\"$ and $\"\"$ for $\"\"$ .

Represent the point $\"\"$ with a circle.

Represent the point $\"\"$ with a dot.

$\"\"$

Observe the graph:

Domain is set of all real numbers.

Range is all real numbers greater than or equal to $\"\"$ .

$\"\"$

Graph of the function $\"\"$ is

$\"\"$

Domain is all real numbers.

Range is all real numbers greater than or equal to $\"\"$ .