Which set of ordered pairs represent a function?

O {(-1, -7),(-2, -8),(-2,7),(-2,-9)}
{(2, 2), (2,9), (2, 3), (2, -3)}
O {(5,9), (5,7), (5,-2),(5, -9)}
O {(-9,8), (-9,7),(-9, 7), (-9, -6)}
O None of the above

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality