Answer:
A
Step-by-step explanation:
This is because each x coordinate is mapped to a y coordinate.
 
        
             
        
        
        
Answer:
9a+18=9
9a=-9
a=-1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
The Y-intercept is -3. 
The gradient is -3/4 since it goes down 3 every 4 tiles.
 
        
                    
             
        
        
        
K=1/3
simplify each bracket, put all numbers on the left hand side, equal it to 0 and solve for k
 
        
             
        
        
        
Answer:
x = 61
Step-by-step explanation:
These 2 angles are supplementary which means they add up to 180:
2x - 6 + x + 3 = 180
3x - 3 = 180
3x = 183
x = 61