Here's the U.S. Dollar Index 4hr chart. It's all over a downtrend, and it's moving between the resistance and the support lines. It will fall to reach 90.10 by crossing 90.20 - 90.13 . After that, if the trend crosse 90.10 , then it will hit 87.50 . But if the trend takes reversal by breaking the resistance, then it will reach the following levels 90.79 - 91.39 .