Pls help me I have other homework to do. Also it detects if it’s right or wrong:( You can answer one or more!

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?