$\"\"$

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

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

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

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$\"\"$

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$\"\"$

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Slope is undefined.

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$\"\"$

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Use these ordered pairs to graph the line.

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1. Draw a coordinate plane.

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

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Since the slope is undefined, the line is vertical.

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

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3. Draw a line through these points.

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$\"graph$ .

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$\"\"$

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The slope is undefined.

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Graph of the line:

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$\"graph$ .