Just need on graph. plz explain if you can. i have a few more questions like this.

Vertex-either the highest point or lowest depending on which way the parabola is (-1,-9)

Y- int- where the graph intersects the y int- (0,-8)

X- int- where the graph intersects the x int- (-4,0) and (2,0)

axis of symmetry- where the line could be folded in half and be the same- x=-1

equation: (x-1)^2 -9=y

< 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⭐