Which link between two elements could you remove from the relation so that it becomes a function? 3 and b or 3 and e
2 and d or 5 and d
3 and b or 4 and b
2 and d or 3 and b

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

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?

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?