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 = −63

b. 3x + 7y = 7
5x − 7y = −63

c. 3x − 7y = 7
5x + 7y = −63

d. 3x − 7y = 7
5x − 7y = −63