Answer:
Slope is 40
Full equation: y=40x-586
Step-by-step explanation:
Slope is y2-y1/x2-x1
14 is x1
-26 is y1
15 is x2
14 is y2
14-(-26)/15-14
40
So the slope is 40
To find the equation 
y=40x+b
14=15(40)+b
14=600+b
b=-586
Equation:
y=40x-586
 
        
             
        
        
        
I think its a 
because the line segments connect each other.
 
        
             
        
        
        
9x - 21 = -42
This should be the type of equation that you're looking 4
        
             
        
        
        
Solution to the question:
Number of blocks stacked: 30
Height of tower: 64 inches
Height of each block: ?
To find the height of each block, we divide the total height of the tower with the number of blocks stacked
Therefore,
Height of each block: 64/30 = 2.13 inches
So, the height of each block is 2.13 inches.