Need help pls and thank you

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Can someone me out here and the tell me the greatest common factor