Find the perimeter of triangle pqr. round your answer to the nearest tenth. triangle pqr is shown. p is at negative 2, 1. q is at 6, 1. r is at 4, negative 3. 19.7 units 16 units 8 units 7.2 units

P(-2,1), Q(6,1), R(4,-3)

First choice

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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