select the best matches from the lists below

a) perfectly elastic 1) cross-price elasticity >0

b) indicator of substitute goods 2)cross-price elasticity <0

c) indicator of necessity goods 3)cross-price elasticity =0

d) indicator of luxury goods 4) 0

e) perfectly inelastic 5) income elasticity <0

f) indicator of unrelated goods 6) income elasticity >1

g) indicator of complementary goods 7) vertical supply curve

h) indicator of inferior goods 8) horizontal demand curve