Find the square root of 529/1080​

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

This is about circle theorems. someone asap : (

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.