Heyy its the sister of this acc help me please again if the owner of this acc aka my sister found out im soo gonna get beat

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

What is x and y intercepts for y=x+7

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.