1. the solution substitutes a (-4,2) and B(n,-4) into the linear function y=kx+b and the inverse proportional function y = m/x.

Find k, b, m

2=-4k+b，-4=nk+b，？ 2=m/-4，？ -4=m/n

Solution: m=-8,? n=2，k=- 1，b=-2

Therefore, the inverse proportional function of (1) is y=-8/x, and the analytical formula of the linear function is? y=-x-2

(2)-4 & lt； X<0 or x>2