Find the equation of the line passing through (6,3) and (6,-4)

Place the following steps in order to complete the square and solve the quadratic equation,

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?

What is the angle measure, or angle of depression, between this bird and the bird watcher?