A particle moves on the hyperbola xy = 18 for time t >=0 seconds. At a certain instant, y = 6 and dy/dt = 8. Which of the following is true about « at this instant?

What’s the answer ? use the picture to see the problem

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?

What is the point slope form of a line with slope -5 that contains point (2,-1)