If a line passes through the points (3,8) and (1,3), its slope is _.

Icould really use some with this question.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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.