Answer:
A.
Step-by-step explanation:
The scale factor of dilation is the ratio of the length of any of the corresponding sides of rectangle R'S'T'Q to rectangle PQRS.
R'S' = 3
RS = 15
Thus,
Scale factor =
Simplify
xy + w = 9
xy = 9 - w
y = ( 9 - w ) / x
x ( 4 - k ) = p
4 - k = p/x
- k = (p - 4) / x
k = - (p - 4)/x