-2x + y = 0

-7x + 3y = 2

x=2,y=-4

Step-by-step explanation:

-2x + y=0 eqn 1

-7x +3y=2 eqn 2

multiply eqn 1 by 3

-6x +3y=0 eqn 4

-7x +3y=2

subtract eqn 3 from eqn 4

-6x +3y=0

-(-7x +3y=2)

x=-2 eqn 5

substitute eqn 5 into eqn 2

-7(-2)+3y=2

14+ 3y=2

3y=2-14

3y=-12

divide both sides by 3

y=-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:

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: