Which equation represents direct variation? a) y = 3x b) yx = 3 c) y = 3x2 d) y = 3x3

The equation that represents direct variation is

Step-by-step explanation:

The general equation of a direct variation is of the form,

.

The constant m is referred to as the constant of proportionality or the constant of variation.

The graph of a direct variation is a straight line that passes through the origin, which has coordinate

The equation that represents a direct variation among the options provided is

Therefore the correct answer is option A.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

< 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⭐