Use the vertical line test to determine whether the relation is a function. If not, identify two points a vertical line would pass through.

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

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

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.