what’s the answer to this?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Using graph paper, determine the line described by the given point and slope. click to show the correct graph below.(0, 0) and 2/3