An object is dropped off a cliff into a deep canyon. The velocity v of the object at the bottom of the canyon is given by the function v = √(64h), where h is the height of the cliff, in feet. Which equation is not equivalent to v=√(64h)?

The path traveled by a bottlenose dolphin as it jumps out of water is modeled by the equation y=-0.4+3x, where t is the height above water and x is the horizontal distance in feet. if a beam of light is shone upward at an angle modeled by the equation x+y=10, at what height from the waters surface will the beam of light hit the dolphin