Find the coordinates of the midpoint. Please help, thank you!

What is the slope of the equation y =

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out