HELPPP. 6th GRADE MATH :( No links and non-useful answers will be reported. Please help!

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

Which of the following vectors are orthogonal to (2,1)? check all that apply

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?