Find the slope of the line that passes through points (4,5) and (3,-4)?​

This doesn’t make sense to me it’s supposed to be lcm ( least common multiple )

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable