Es que la verdad no he entendido como funcionan las funciones y como se extrae el Dominio, Codominio, rangos y grafos. Por si alguien me podría explicar con este problema ( ) Y también otro, o algún video que sea de ayuda. Necesito entender este tema.

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?