Two systems of equations are shown:
system a:
6x + y = 2
−x − y = −3
system b:
2x − 3y = −10
−x − y = −3
which of the following statements is correct about the two systems of equations?

(a) the value of x for system b will be 4 less than the value of x for system a because the coefficient of x in the first equation of system b is 4 less than the coefficient of x in the first equation of system a.

(b) they will have the same solution because the first equations of both the systems have the same graph.

(c) they will have the same solution because the first equation of system b is obtained by adding the first equation of system a to 4 times the second equation of system a.

(d) the value of x for system a will be equal to the value of y for system b because the first equation of system b is obtained by adding −4 to the first equation of system a and the second equations are identical.

Aline that intersects one of two parallel lines intersects the other also always sometimes never

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

In a study of the relationship between socio-economic class and unethical behavior, 129 university of california undergraduates at berkeley were asked to identify themselves as having low or high social-class by comparing themselves to others with the most (least) money, most (least) education, and most (least) respected jobs. they were also presented with a jar of individually wrapped candies and informed that the candies were for children in a nearby laboratory, but that they could take some if they wanted. after completing some unrelated tasks, participants reported the number of candies they had taken. it was found that those who were identiď¬ed as upper-class took more candy than others. in this study, identify: (a) the cases, (b) the variables and their types, (c) the main research question, (d) identify the population of interest and the sample in this study, and (e) comment on whether or not the results of the study can be generalized to the population, and if the ď¬ndings of the study can be used to establish causal relationships.