Rectangle abcd is dilated by a scale factor of 2 with the origin as the center of dilation, resulting in the image a′b′c′d′. if the slope of is -2, what is the slope of ?

a.
-4

b.
-1

c.
-2

d.
0

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample