Support and resistance are used by technical analysts to identify price point on a chart.
They show the probabilities that favor a pause or reversal of a trend. Support occurs when a downtrend can be expected to pause due to a concentration of demand or buying interest. When the price drops, demand increases, which form the support line. On the contrary, resistance appears where increase of price is halted by growing numbers of sellers wishing to sell at this price. Support forms the price floor while resistance establishes the ceiling.
As shown in the picture below, I try to draw the support and resistance line. The upper line represents the resistance one and the counterpart is the support one. If there is any mistake, please correct