Answer:
 x igual 5 ,12,4
Step-by-step explanation:
xjxxixix
holghb
 
        
             
        
        
        
Answer:
y = -3x + 1
Step-by-step explanation:
Starting with the point (-1, 4) and the slope m = -3, write out the point-slope equation of a straight line:  y - k = m(x - h) becomes y - 4 = -3(x + 1), or:
y = -3x - 3 + 4
y = -3x + 1    This is the same as answer choice (b).
 
        
             
        
        
        
Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
 
        
             
        
        
        
You have to distribute the 7 to x and 2 so :
7x+14=2x-1
Add one to both sides (inverse operations)
7x+14=2x-1
 +1 +1
7x+15=2x
Cross Cancel by subtracting 7x from both sides 
7x+15=2x
-7x -7x
15=-5x
Divide by -5
15/-5= -5/-5
X= -3