Describe the effect of the transformation.

Question

(x,y)--->(x,-7y)

A. Vertical translation of -7 units.
B. Vertical stretch without reflection
C. Horizontal translation of -7 units
D. Vertical stretch without reflection

Is the answer A

Answer 1

D.Vertical stretch with reflection
It was supposed to say this

Answer 2

y---->7y would "stretch" it by a factor of 7
y ---- -7y would not only stretch it but also reflect it in the x-axis.

so it looks like D after your correction of the wording

Answer 3

(x,y) --> (x-1,y+4)