Let L₁ be a line passing through the points (-2,-1) and (3,19). a. Find the equation for L₁, and give the equation in both slope-intercept form and point- slope form. b. Find the equation for the line L2, given that it passes through the point (-4,10) and is perpendicular to L₁. Give the equation in both slope-intercept form and point-slope form.