What is the definition of percent of change

Drag each sequence of transformations to the correct location on the table. classify the sequences of transformations based on whether or not they prove the congruency of the shapes by mapping shape i onto shape ii. plz i'll rate u 5 stars need this done for a mastery test

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Can someone me with this problem . show your work .