18. [-/5.26 Points] DETAILS 0/30 Submissions Used Find the equation of the tangent line to the graph of the given function at the point with the indicated x-coordinate. f ( x ) = x + _; x= 2 X' Submit Answer 19. [-/5.32 Points] DETAILS 0/30 Submissions Used Find the equation of the tangent line to the graph of the given function at the point with the indicated x-coordinate. f ( x ) = 5 21 X =1 y Submit