1) Which variable has a coefficient of 1?
x - 4y = 16
3x + 4y = 20

x-4y=16; x

Step-by-step explanation:

as coefficient of X is one whereas in second equation it is 3 for X and 4 for y ..

Step-by-step explanation: The number in front of your variable is called your coefficient and notice that the x does not have a coefficient.

When that happens, when there is no number in front

of your variable, you can put a 1 there to fill that position.

So x can be thought of as 1x.

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:

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