The variable is x. 
Hope that helps :)
        
             
        
        
        
Y + 2 = -2(x - 5)
Simplify.
y + 2 = -2x + 10
Subtract 2 from both sides.
y = -2x + 10 - 2
Simplify.
y = -2x + 8 → Slope-intercept form
Our answer is the second option : y=-2x+8
~Hope I helped!~
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Slope = (3+6)/(-4+1)
           = 9/-3
           = -3
Y=mx+b
-6= -3×-1 +b
-6 = 3 +b
b = -9
 
        
             
        
        
        
Answer:
(1, 3)
Step-by-step explanation:
x - 3y = -8
3x + y = 6
Isolate a variable in one of the equations:
y = 6 - 3x
Substitute the value of y into the other equation:
x - 3(6 - 3x) = -8
Use distributive property:
x - 18 + 9x = -8
Combine like terms:
10x - 18 = -8
Isolate the variable:
10x = 10
x = 1
Substitute the value of x into any equation:
3(1) + y = 6
3 + y = 6
Isolate the variable:
y = 3