Triangle abc has been rotated 90° to create triangle def. write the equation, in slope-intercept form, of the side of triangle abc that is perpendicular to . you must show all work to receive credit.

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.