Help pls

Find the solution of each of the following.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.