Which of the following correctly completes the square for the equation below? x^2+2x=19

Plz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Which math sentence can be used to determine if the triangle is a right triangle?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.