Y=3x-1 (2, 5),
Answer is B (2, 5)
2/12 for the first one but I can't really figure out the second one
For a 30-60-90 triangle
if the shorter leg (oposite 30 degrees) is x then the other leg is x√3 and the hyptonuse is 2x
so
hyptonuse=8
8=2x
4=x
longer leg is 4√3, yep
so shorter leg or height will be 4 units