Which of the following are true? Select all that apply.
A
-(-9) 9
B
-(-5) = -5
C
-(10) - 10
The opposite of 8 will be 8 units to the left of 0 on a number line,
E
The opposite of every number will be to the left of 0 on a number line

Look at attachment. has all info needed. need

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Which table represents a linear function? i'll give brainliest to first answer ^'^