So i have an odd question of sorts. i was working with parabolas and had the equation: y=-4(x-1)^2+3. curious, i changed the y to an x so that it now read: x=-4(x-1)^2+3. when put into desmos, this resulted in two parallel lines. why?

Pls , the question is in the picture!

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =