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OhDee8269
15.07.2020 •
Mathematics
Again. I need help with this
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Answers on questions: Mathematics
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Ответ:
Option B.
Step-by-step explanation:
Scale factor of the image =![\frac{\text{One side of the triangle FED}}{\text{Corresponding side of the triangleABC}}](/tpl/images/0706/3170/eb6a3.png)
=![\frac{\text{DF}}{\text{AC}}](/tpl/images/0706/3170/51c15.png)
=![\frac{3}{6}](/tpl/images/0706/3170/476f5.png)
=![\frac{1}{2}](/tpl/images/0706/3170/9cdae.png)
Coordinates of point C → (-2, 2)
Coordinates of the corresponding point C' after dilation with a scale factor
,
C(-2, 2) → C'(-1, 1)
Coordinates of point C' after reflection across y-axis,
C'(-1, 1) → C"(1, 1)
Followed by the translation of 2 units downwards,
C"(1, 1) → D[1, (1 - 2)]
→ D(1, -1)
From the graph we get the same coordinates of point D as (1, -1).
Therefore, ΔABC was dilated by a scale factor of
, reflected across the y-axis and moved through the translation of 2 units downwards.
Ответ:
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