What is the slope of the line that contains the points (-4,47) and (2,-16)?

How many lines can be drawn through points j and k? 0 1 2 3

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

In a column proof the right column states your reasons