Define whole number and rational number​

Whole numbers - Numbers that start from zero are called whole numbers. OR. In the set of natural numbers, if we add zero, it will become the set of whole numbers. 0, 1, 2, 3,

Natural Number- The collection of all counting numbers is called Natural Number. Or in series of 1,2,3,4

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: