Which graph shows a set of ordered pairs that represents a function?

2nd one

Step-by-step explanation:

if you do vertical line test on the others they have 2 points in one line which is wrong.

2nd One

Step-by-step explanation:

Did on Edge

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

i hope this is what you were looking for.

see attached graph