In problems 6–13, find all values of (x, y) where theorem 3.1.1 guarantees the existence of a unique solution.

What is the quadric regression equation that fits these data

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?