$\"\"$

The points are $\"\"$ and $\"\"$ .

The formula for slope is $\"\"$ .

Substitute $\"\"$ for $\"\"$ , $\"\"$ for $\"\"$ , $\"\"$ for $\"\"$ and $\"\"$ for $\"\"$ in above formula.

$\"\"$

Slope is undefined.

$\"\"$

Use these ordered pairs to graph the line.

1. Draw a coordinate plane.

2. Plot the points $\"\"$ and $\"\"$ .

Since the slope is undefined, the line is vertical.

A vertical line never moves left or right, the $\"\"$ coordinates of this line are always equals to $\"\"$ .

3. Draw a line through these points.

$\"graph$ .

$\"\"$

The slope is undefined.

Graph of the line:

$\"graph$ .