Find Y When x=2 y=5x-9

1

Step-by-step explanation:

y = 5(2) -9

y= 10 -9

y = 1

answer: - reflection across the x-axis is the right transformation which would performed by kim to create δa'b'c'.

explanation: -

in the given picture δabc is in first quadrant and its transformed image δa'b'c' is in fourth quadrant such that coordinate of a=(5,4), b=(6,9) ,c=(2,8) and a'=(5,-4), b'=(6,-9),c'=(2,-8)

we can see that only the x- coordinates of δabc.remain same whereas y-coordinates transformed to the opposite sign i.e. negative sign in δa'b'c'.

therefore,   kim performed reflection transformation (x,y)→(x,-y) across x axis to create δa'b'c'.