The graphs of linear function f and g are shown on the grid. Which function is best represented by the graph of g

Write an equation of the line given the two points below (write your equation in slope-intercept form, y=mx+b): (-4, 4) and (6, -4)

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

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !