The slope of line D is also -4 because the lines are perpendicular.
On the bottom left, the answer is subtraction property of equality because you need to subtract 4x to the 7x to simplify the equation.
The simplified for is 9n+2
<h3>The answer is:</h3><h2>8</h2><h2 />
We know that the opposite of 8 is -8. So the opposite of -8 is 8.
You can look a number line if you are still confused!
Try to do them on math -way
