Answer:
immune system
Step-by-step explanation:
I don't know exactly but I think the immune system
interferon
it just is?
0
5a-3=5a-3
or, 5a-5a=-3+3
or, 0=0 answer
slope : 1/15
slope = change in y / change in x
change in y = 1 / change in x = 15
therefore, 1/15 = slope
