100 Point! Need help please, thanks a lot!

How many solutions does the system of equations have?
2x = -10y + 6 and x + 5y = 3

How many solutions does the system of equations have?
y = 6x + 2 and 3y - 18x = 12


How many solutions does the system of equations have?
x - 3y = 15 and 3x - 9y = 45


How many solutions does the system of equations have?
y - 7x = -14 and 7y -49x = -2