Write an equation in point-slope form for the given point and slope: point: (-8,3) slope: 6

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

When y’all answer can y’all explain too !

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?