Which two points are on the graph of y = -x + 3? a. (-1, -2), (1, 4) b. (1, 2), (0, -3) c. (0, 3), (4, -1) d. (4, -1), (1, 3) fyi: there is only one answer to this question

(c)

Substitute the x-coordinate from each point into the equation and if equal to the corresponding y- coordinate then the point lies on the line

(a)

x = - 1 : y = 1 + 3 = 4 ≠ - 2

x = 1 : y = - 1 + 3 = 2 ≠ 4

(b)

x = 1 : y = 2 = 2

x = 0 : y = 0 + 3 = 3 ≠ - 3

(c)

x = 0 : y = 3 = 3 ← correct

x = 4 : y = - 4 + 3 = - 1 = - 1 ← correct

the pair of points is (c)

< 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⭐

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