Hahah what you learning...............
2 opposite interior angle (opposite to the exterior angle) added together are equal to the exterior angle
6x-1+85 = 18x
6x +84 = 18x
subtract 6x from both sides
84 = 12x
divide both sides by 12
x = 7
<em>hope this helps! </em>
A because -1/4x is your slope and the +5 would just be shifted over to the 5 on the y-axis
Answer:
No.
Here's the break why it is not proportional...

The proportion breaks near the end because the multipliers no longer match.