Is this a function { (1,4), (2,5), (-1,3), (8,7), (2,2) }​

no because the 2 in the x-value repeat

Step-by-step explanation:

no.

each input (x) can only have one output (y) for it to be a function

2,5 and 2,2 could not be in the same table if it were a function.

(could you give me brainliest please? I'm one away from leveling up)

yes because they have the same amount of green and blur marbles.

step-by-step explanation:

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this