Does the graph represent a function and if so, why?
Yes, no two ordered pairs on this graph have the same second element.
Yes, there is more than one ordered pair on this graph.
Yes, no two ordered pairs on this graph have the same first element
No, there is a limited number of ordered pairs on this graph

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?