Line d passes through points (9, 1) and (2, 5). Line e passes through points (9, 7) and (7, 4). Are line d and line e parallel or perpendicular?

Which of the following of the following sets of side lengths could not form a triangle?

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left