$\"\"$

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

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

$\"\"$

Multiply each side by $\"\"$ .

$\"\"$

Cancel common terms.

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

Add 10 to each side.

$\"\"$

Multiply each side by negative 2.

$\"\"$

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

The value of $\"\"$ .