Answer:
8-2/3-1 
Step-by-step explanation:
slope equation is y2-y1 over x2-x1 so in that case you would put on top the 8-2 and then for the bottom you would put the 3-1
 
        
             
        
        
        
Answer:   The answer is x = 65 - 60y.
Step-by-step explanation:  Given that Miguel is the grandfather of Raul and Paula is Raul's sister. 
Now, let 'x' years be the age of Raul and 'y' years be the age of Raul's sister (Paula). 
Also, given is the following information - 
Raul's age = Grandfather's age - 60 × sister's age.
Since the age of Miguel, Raul's grandfather is 65 years, so we can write the following equation to find Paula's age

Thus, we can find Paula's age (y) using the equation

where 'x' is the age of Raul.
 
        
             
        
        
        
We see a right triangle here.
Use the Pythagorean Theorem:
a^2+b^2=c^2
a & b=legs
c=hypotenuse
a^2+15^2=20^2
a^2+225=400
a^2=175
a=13.2287565553
a=13.2
The missing side is 13.2cm
        
             
        
        
        
Y≤x/3-1  AND y≤x/3-3
So for BOTH inequalities to be true:
y≤x/3-3