Does adding a positive or negative number change the inequality symbol?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350