3 8. Determine the coordinates of the point(s) on the graph of y = x +3x where the tangent is parallel to the line 24x-y+4=0 [K 4] 9. A curling skip slides a stone toward the rings at the opposite end of the ice. The stone's position, S, in metres, t seconds after it has been released, can be modelled by s(t)=2lr-7r How far does the stone travel before stopping? [A 4, C 1]