HELP

Can someone please help me and solve this i don't understand it?

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.

Which graph represents the equation y =4x

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)