Need help with a triangle based question.?

The triangle is made by the x-axis, y-axis, and a third line that goes through point 3,2. The x intercept is labeled as x,0 and the y intercept is 0,y. I need to find the function of the length of the hypotenuse in terms of x and I can't seem to figure out where to even start. Anything to point me in the right direction would be greatly appreciated.