Finding Values of sum and difference functions

1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.

Find the vertex of the function given below y=x^2-6x+1

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9