What is the function for the table below? (Explain) X ) 11, 10, 5, 15, 12, 7, 8, 14, 6, 12

Y ) 77, 70, 50, 91, 78, 70, 62, 86, 55, 80

Please give me an explanation on how to solve questions like this so I don’t have to keep asking questions.

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second