Function Not a function
y
5
4
3
2+
-5 -4 -3 -2 -1
+ X
1 2 3 4 5
-2 +
-3
-4
-5

Function

Step-by-step explanation:

We can tell if the graph is function or not by doing line test.

First, we draw a vertical line.

Second, if the graph intercepts the line more than two points then it won't be a function.

If the graph only intercepts the line only once (one point) then It is a function.

From the graph, It is a function.

< 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⭐

a

step-by-step explanation: