4.) a concert charges $24.50 per daily adult ticket and $13.75 per child's ticket. a group of 90 people paid $1560.00 for tickets. write a system of equations that could be used to find x, the number of adult tickets purchased, and y, the number of children's tickets purchased?

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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