Figure 1 goes through a transformation to form Figure 2. Which of the following descriptions fits the transformation(s) shown below?
reflection across the x-axis.
reflection across the origin.
180° clockwise rotation around the origin.
translation right 4 units and down 4 units.
What is the rule for the transformation formed by a translation 4 units down, then a rotation 90° clockwise around the origin?
(x´, y´) = (x, −y + 4)
(x´, y´) = (x, y − 4)
(x´, y´) = (y − 4, −x)
(x´, y´) = (−y + 4, −x)
Figure 1 goes through a transformation to form figure 2. Which of the following descriptions fits the transformation shown?
reflection across the y-axis.
270° clockwise rotation around the origin.
translation right 3 units.
90° clockwise rotation around the origin.
What is the rule for the transformation formed by a dilation by a scale factor of 5?
(x´, y´) =(15x,15y)
(x´, y´) = (5x, 5y)
(x´, y´) = (5x, y)
(x´, y´) = (x, 5y)
Describe the transformation needed for the pre-image to be transformed into the post-image, and determine if the two figures are still congruent or not.
Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been rotated 180° and reflected across the y-axis.
Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been reflected across the x-axis and then reflected across the y-axis.
Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been rotated 270° and then reflected across a 45° line.
No, the images are not congruent because the side lengths and angle measurements have changed due to transformations. The image has been reflected across the x-axis and then reflected across the y-axis.
