In calculating a certain cost of living index number, the following weights were used Food 15

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:

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

b

step-by-step explanation: