Infinite solutions for linear equations.
a + 5 = b2-15 = 2b
B = ( -3, 5 ), a = ( -11, 5 ).
The given system of equations a+5=b2−15 and 2b=b has infinite solutions.
The points (a,b)=(−11,5) and (a,b)=(−3,5) are specific solutions to the system.