The correct answers are:
- The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.
- The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.
Further explanation:
Given equations are:
2x-y = -5
x+3y = 22
We have to check whether the given statements are true or not. In order to find that we have to put the points in the equations
Putting the point in 2x-y = -5

Putting the point in x+3y=22

The point satisfies the first equation but doesn't satisfy the second. So,
1. The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.
This statement is true as the point satisfies the first equation
2. The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true.
This Statement is false.
3. The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.
This statement is true.
4. The ordered pair (7, 19) is a solution to the system because it makes both equations true.
This statement is false as the ordered pair doesn't satisfy both equations. 
Keywords: Solution of system of equations, linear equations
Learn more about solution of linear equations at:
#LearnwithBrainly
 
        
             
        
        
        
Answer:
a) 
Step-by-step explanation:
x + 2 = 3x + 6
-3x - 3x
___________
−2x + 2 = 6
  - 2 - 2
_________
4 = −2x
_ ___
−2 −2
 [Plug this back into both equations above to get the y-coordinate of 0];
 [Plug this back into both equations above to get the y-coordinate of 0]; 
I am joyous to assist you anytime.
 
        
             
        
        
        
Plug into y-y1=m(x-x1)
y+4=4(x-4)
        
             
        
        
        
Answer:
<u>D</u>
Step-by-step explanation:
The interval notation for the graph :