Is (-8,1), (-5,1) endpoints of a vertical line, a horizontal line, or neither?

How do i do this? i don’t understand

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?