Answer:
is sometimes positive and sometimes negative.
Step-by-step explanation:

Take 

Take 

Hence
for
and
for 
So
is sometimes positive and sometimes negative in the interval.
Answer:
Stratified random
Step-by-step explanation:
got it right
Answer:
i think the answer is b if i am wrong please tell me please :(
Step-by-step explanation:
Answer:
The slope is 6
Step-by-step explanation:
Rise/run
The rise is 6 and the run 1
Then simplfy 6/1 to get 6