Change the equation to y=-3x+1. this means the slope is -3, and the y intercept is 1. the line is dashed, and the area below the line is shaded.
        
             
        
        
        
"Increasing" and "decreasing" are references to what the y-values do when the x-values increase.  
Attached is a copy of all four tables, marked with whether the y-values increased or decreased on each step (and it also shows how much that increase or decrease was.
The only table that does this is the top right table in the attachment, which is your second table.
 
        
             
        
        
        
Answer:
t/8 + t/7 = 1
Step-by-step explanation:
Given in the question that,
time require for Jose to paint the house = 7 hours
time require for Brandon to paint the house = 8 hours
Suppose t means Full house painted.
<h3>
To solve the question we have to figure out how much each of them can paint in ONE hour.</h3>
7 hours----t
1 hour ---- t/7
8 hours----t
1 hour ---- t/8
<h3>
Equation</h3>
t/8 + t/7 = 1 (in one hour)
(7t + 8t)/8(7) = 1
15t/56 = 1
15t = 56
t = 56/15
t = 3.73 hours
 
        
             
        
        
        
You can work it out by using trial and error
so you get
x=3 , y=2
        
             
        
        
        
Switch y and x to find the inverse:
x = 3y - 8
Now just solve for y
y = x/3 + 8/3