Which of the following relations is not a function?
{(0, 0), (1, 0), (2, 0)}
{(-1,3), (4,2), (-1,5)}
{(1, 2), (3, -5), (-1, 7)}
{[7, -1), (3,-2), (5,-2)}

for this case we have the following expression:

to solve, we rewrite the expression as:

we apply double c and we have:

thus, the quotient is 48.

so, patel found a wrong ratio and the multiplication was incorrect.

option d

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's