This equation is written in slope intercept form
Remember that the slope intercept formula is:
y = mx + b
m is the slope
b is the y-intercept
In this case:
slope (m) is 2
y-intercept (b) is (0, - 1)
To plot this on a coordinate plane plot the y-intercept (0, -1). 
To graph the rest of the line you can use what you know about the slope. Rise up two units and over to the right one unit from the y-intercept. You should arrive at the point (1, 1)
Then, again from the y-intercept, go down two units and to the left one unit. You should arrive at the point (-1, -3)
Now draw a straight line through the y-intercept and the other two points you just found 
The image of the graph is shown below
Hope this helped!
~Just a girl in love with Shawn Mendes
 
        
             
        
        
        
Answer:
Step-by-step explanation:
(х+40)°(2x+20°
 
        
             
        
        
        
Again A because that rule applies to what I said before in the other 2 questions you asked.
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
Transformation that maps triangle XYZ into triangle X'Y'Z' is a translation 3 units to the right and 1 unit down, because
- X(0,0)→X'(3,-1);
- Y(2,3)→Y'(5,2);
- Z(4,-1)→Z'(7,-2).
So, the algebraic ru;e of the transformation is 
(x,y)→(x+3,y-1)