This is urgent which relation is a function? question 3 options: {(8, –1), (2, –1), (3, 8), (2, 5}{(7, 12), (1, –5), (3, –10), (2, –5)}{(1, 2), (1, 5), (1, –1), (1, 4)}{(–3, 4), (–2, 5), (0, 9), (0, 12)}

The answer is B. This because No x value repeats. To be a function each x value must have only one y value.

Step-by-step explanation:

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!