ax+by=16

3x+2y=64

In the system of equations above, a and b are constants. If the system has infinitely many solutions, what is the value of ab?

1 answer

ax+by=16
3x+2y=64
to make them the same
4ax+4by=4*16 = 64
3x+2y=64
so
4 a = 3
4 b = 2