Which set of ordered pairs does not represent a function? a-(0,1),(2,2),(4,8),(-2,7),(5,8)
b-(0,1),(2,2),(4,8),(2,7),(5,8),(7, 9)
c-(-3,6),(2,7),(0,5),(1,5),(4,9),(5 ,4)
d-(-4,2),(-3,2),(-2,2),(-1,2),(0,2) ,(1,2)

the answer is B.

Step-by-step explanation:

A relation where each input x gives back exactly one output y no x vaules repeat.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!