write a function that relates the input X and the output Y.

Question

1.
input x: -2 0 2 4
output y: 4 0 -4 -8

2.
input x: 0 1 2 3
output y: 1 4 7 10

thanks )

Answer 1

the two input and output tables I made are not really easy to follow. But this is what I meant:

(x,y)

1. (-2, 4), (0,0), (2,-4), (4,-8)
2. (0,1), (1,4), (2,7), (3,10)