what is the function rule for
input x 1,2,3,4,5 and
output 3,2,0,-1,-2
That is not a linear relationship. I think you may have copied the problem wrong. The bottom row should be
3,2,1,0,-1. If it is, the function rule is
y = -x + 4
input x 1,2,3,4,5 and
output 3,2,0,-1,-2
3,2,1,0,-1. If it is, the function rule is
y = -x + 4