Hey there!
The correct answer is 
~ Write the equation
~ Simplify
~ Subtract
from both sides
~ Subtract
from both sides
~ Divide both sides by 8
Hope it helps and have a great day!
Hmmm it would be kind of hard to graph as it will be a curved line but the middle of the line would be at (2,-7). Not (-2,-7).
And it will be curving upwards, meaning it will start by going down and end by going up.
Hope this helps some.
T could be located at 15 because 5 plus 15 equals 20