Which table represents y as a function of x? х y X y -2 4. 0 0 о 0 0 2 1 1 2. --2 2 4 2 х y X у 0 0 - 2 1 O 2 2 O - 2 1 4 4. 2 4 6 OD 3 (NEED HELP ASAP PLEASE )

Find the slope of the line y =8/9x + 1.

Factor this polynomial completely x^2-64

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 =