Find an equation for the line perpendicular to the line 5x + y = – 5 having the same y-intercept as 3x – 6y = 2

Ineed to know the answer to this algebra question.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required