X/y=20 show direct variation

Step-by-step explanation:

if y is directly proportional to x

, then we can write

y=kx,

where

k is the constant of proportionality.

If you solve for k

, we have

k=yx,

which is the ratio of

y to x.

the constant of proportionality is the ratio between two quantities that are directly proportional.

Inverse Variation

If

y is inversely proportional to x

, then we can write

y=kx,

where k is the constant of proportionality.

If you solve for k, we have

k=xy,

which is the product of

x & y

the constant of proportionality is the product of quantities that are inversely proportional.

I hope that this was helpful.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)