Jim's backyard is a rectangle that is 15 5/6 yards long and 10 2/5 yards wide. jim buys sod in pieces that are 1 1/3 yards long and 1 1/3 yards wide. how many pieces of sod will jim need to buy to cover his backyard with sod?

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

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