Certain amino-pyridazines, compositions thereof, and methods of their use

Compounds of Formula I: Formula I or a pharmaceutically acceptable salt thereof are provided, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, X and m are as defined herein. A pharmaceutically acceptable composition is also provided comprising a compound of Formula I, or a pharmaceutically acceptable salt thereof. Methods of using a compound of Formula I, or a pharmaceutically acceptable salt thereof, are also provided.