Which system of equations below has exactly one solution?
a.) y = –8x – 6 and y = –8x + 6
b.) y = –8x – 6 and One-halfy = –4x – 3
c.)y = –8x – 6 and y = 8x – 6
d.) y = –8x – 6 and –y = 8x + 6
HEL I DONT GET THIS PLEAS :(

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.