I'm struggling with this question answer

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

Which of the following shows the length of the third side, in inches, of the triangle below

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price