What ordered pair can you use to make the equation below true?

2x = y

Which table represents a linear function? i'll give brainliest to first answer ^'^

Find y to the nearest hundreds place

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