text: first find the slope (or gradient) of line "L"\n= (8-(-4))/(-3-6)\n=-12/9\n=-4/3\n\nnext find the equation of line "L"\ny=(-4)/3x+c\n8=-4/3(-3)+c... c=4 (which is y-intercept)\nline "L": y=(-4/3)x+4\n\n0=(-4/3)x+4, x-intercept is 3\n\nThe length of the hypotenuse = 5 ('cos 3^2+4^2=5^2)