$\"\"$

The two points are $\"\"$ and the slope is $\"\"$ .

Substitute the values of $\"\"$ in the slope formula $\"\"$ .

$\"\"$

$\"\"$ .

Apply cross products property: If $\"\"$ then $\"\"$ . \ \ $\"\"$

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

Subtract 8 from each side.

$\"\"$

Multiply each side by negative 1.

$\"\"$

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

The value of $\"\"$ .