If any one-to-one function and its inverse function are both graphed on the same grid, which of the following will be a line of
symmetry?

If 3x+8=3x+8 is it one solution or no solution

How do you solving the solution of each system using elimination?

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.