$\"\"$

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

The slope of the line passing through the points $\"\"$ is $\"\"$ .

$\"\"$ (Slope formula)

$\"\"$ (Substitute: $\"\"$ ) $\"\"$

$\"\"$ (Subtract: $\"\"$ )

$\"\"$ (Cancel common terms)

So, the slope is $\"\"$ .

$\"\"$

The slope of the line passing through the points P and Q is $\"\"$ .