The equation is .

Make a table:

The ordered pairs are .

Graph:

Graph of the equation is .

Plot the points.

Observe the graph:

Every real number is the -coordinate of some point on the line.

So, the domain (-coordinates on the line) is set of all real numbers.

Every real number is the -coordinate of some point on the line.

So, the range (-coordinates on the line) is also set of all real numbers.

Vertical line test:

Draw the vertical lines through the points.

Observe the graph:

There is no vertical line that contains more than one point.

The equation passes the vertical line test.

The equation represents a function.

Find the function is one-to-one, onto and continuous or discrete.

Each -value is paired by exactly one -value and each -value is paired by exactly one -value.

Hence, the equation is one-to-one and onto function.

As the graph is a solid line without breaks, the function is Continuous.

The domain (-coordinates on the line) is set of all real numbers.

The range (-coordinates on the line) is also set of all real numbers.

The equation represents a function.

The equation is one-to-one and onto function.

The function is Continuous.