What are the explicit equation and domain for an arithmetic sequence with a first term of 6 and a second term of 2?
a) an = 6 - 2(n - 1); all integers where n > 1
b) an = 6 - 2(n - 1); all integers where n > 0
c) an = 6 - 4(n - 1); all integers where n > 0
d) an = 6 - 4(n - 1); all integers where n > 1

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:

or

55 degrees because 55+55=110 degrees