Answer:
ok this is easy all it is 16-7=9 so a=9 so all it is 7x9=72 then its 72 divided by 2 so your answer is 36
 
        
                    
             
        
        
        
Answer:
To find a point that belongs to the graph, you have to assume the value of one variable and compute the other one. For example, if x = 0, then y = -3 -0 = -3. Similarly:
x   y
0   -3
1    -4
2    -5
To make the graph, locate the previous points on the coordinate plane and then draw the line that passes through them (see figure attached) 
 
        
             
        
        
        
Answer:
a_n=a_1+(n-1)d
Step-by-step explanation:
sorry for late anwser
 
        
             
        
        
        
Y=2x+2 describe the best fit.
first find x and y intercept of a line 
x intercept where y=0 is x=-1 and  y intercept where x=0 is y=2
        
                    
             
        
        
        
Solve for x by plugging in y, then plug x back in