Answer:
The correct options are 2, 4, 5.
Step-by-step explanation:
It is given that the system of equations has an infinite number of solutions. It is possible when both equations represents the same line.
One of the lines in a system of equations:

It means another line has same equation.
All the points lie on the line are the solution of the system of equations. So, option 1 is incorrect.
From the given graph it is clear that the point (1,1) lies on the line already graphed. So, the point (1, 1) is a solution and option 2 is correct.
Put x=-1 in the given equation.

The point (-1,-5) is a solution. So, option 3 is incorrect.
Put x=20 in the given equation.

The point (20,-58) is a solution. So, option 4 is correct.
Since both lines has same equation, therefore when the other line in the system is graphed, it will share all points with the line already graphed. Option 5 is correct.