Rectangle QUAD has coordinates​ Q(0,0), ​U(0,4 ​),
​A(7
​,4​),
and ​D(7
​,0).
​Q'U'A'D' is the image of QUAD after a dilation with center​ (0,0) and scale factor 7
.
What are the coordinates of point Upper D
​'?
The coordinates of point Upper D
​'
are
.
​(Type an ordered​ pair.)