which set of ordered pairs is a function?
{(-6,-4).(-4,-2), (0,0).(-42).(-6,4)}
{(-2,0).(-42). (0,3).(4.1).(-2,5)}
{(-5,1). (-3, 2), (-13), (14)(3,5)}
[(-15).(-14),(-13)(-12).(-11)}
Done