if a sequence is defined by f(0)=3 and f(n+1)=-f(n)+5 for n_> 0, then f(2) is equal to

a.2
b.3
c.5
d.8

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2