Helop pls asap

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

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.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?