Choose the system of equations that matches the following graph:
Picture of coordinate plane with line y equals negative 3 over 7 x plus 1 and line y equals 5 over 7 x plus 9. They intersect at negative 7, 4.
a. 3x + 7y = 7
5x + 7y = β63
b. 3x + 7y = 7
5x β 7y = β63
c. 3x β 7y = 7
5x + 7y = β63
d. 3x β 7y = 7
5x β 7y = β63
