Answer:
The Answer is B.
Step-by-step explanation:
I took the quiz on Edge.
Answer: 
Step-by-step explanation:
Given a System of linear equations, the solution of the system is the point
in which the lines intersect, where "x" is the x-coordinate and "y" is the y-coordinate.
Having the following System of equations:

You can use the Elimination method to find the value of "x":
-Multiply the second equation by 3.
- Add the equations.
- Solve for "x".
Then, you get:

A quadrilateral because you just reverse the question.
Its c because you have to add all those numbers and it equals c
The values of a and b are 4 & 6