I need help finding my friends pls help

Whats the name of the vertical axis

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.

Which statements are true about additional information for proving that the triangles are congruent check all that apply