What is the answer to: -45=x+(-3)+50

Does the point (1, sqrt 7) lie on circle shown.

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.

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line