Which table shows a proportional relationship. i meed help

Find an equation of the line perpendicular to the graph.

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.

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units