The table tells us that the x coordinate. It also tells us that y is always x + 1.
For #1 you plot the coordinate (0, 1).
0 (the x coordinate) is given to us already.
1 (the y coordinate) is needed to be found by the equation.
You would then need to fill in the equation given with the x coorident. 
y = 0 + 1 
Then, solve for y.
0 + 1 = 1
The y coordinate is 1
Go to the horizontal line (x) and find 0.
Then go to the veridical line (y) and find 1.
Then match up the the x and y to plot the coordinate.
You would continue with this equation with the rest of the xs. 
This is a hard concept to explain in just words, so feel free to comment with any more questions. :D
        
             
        
        
        
You want to use the addition property, so you need to ADD each term. Just change the minuses to pluses, making sure you keep the negative with the number
5x-8x-7y+y =
5x + -8x + -7y +y
 
        
             
        
        
        
Answer:
4, 8, 6
Step-by-step explanation:
4 is cost, 6 is acid rain, 8 is, recycling
 
        
             
        
        
        
So you express fraction. 
15 x (1/3)^ 3=15/27=5/9
        
                    
             
        
        
        
It will be 165.85365853658536. Hope this helps !!