7
QuizMultiple Choice
Similarity and Transformations
Question 7 • Common Core Math 8 - MA3108 B-IC
Triangle is the image of triangle Z after a series of transformations.Aliyah and Ivan described the sequence of transformations in different ways.Aliyah’s SequenceIvan’s Sequence1. a reflection of triangle Z across the y-axis2. a dilation by a scale factor of with the origin as the center of dilation 3. a translation 2 units up1. a dilation of triangle Z by a scale factor of with the origin as the center of dilation 2. a translation of 2 units up and 2 units to the leftWhich sequence or sequences are correct and why?
Answer
A
Only Aliyah is correct. A dilation and translation alone could not produce triangle .
B
Only Ivan is correct because the dilation must be the first step in the sequence.C
Neither Aliyah nor Ivan is correct because they both used an incorrect translationD
Both Aliyah and Ivan are correct because both chose the correct scale factor for the dilation and both describe other transformations that would produce triangle .