Which set of ordered pairs does not represent a function? O{(-4, – 7), (-5,–9), (-9,8), (8, – 7)}
O {(4,0),(-8,-9), (7, -9), (2,6)}
O {(-1,-1), (-3,-8), (-5, -3), (-5,0)}
{(-3, -5),(1,9), (-5, -5), (3, -3)}

The answer is C.

Step-by-step explanation:

As you can see -5 is a repeating number.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

the first one

step-by-step explanation:

just id the test.