Line segment ab has endpoint a locates at the origin. line segment ab is longest when the coordinates of b are a. (3,7) b. (2,-8) c. (-6,4) d. (-5,-5)

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters