anonymous
  • anonymous
A triangle has coordinates A (1, 5), B (-2, 1) and C (0, -4). What are the new coordinates if the triangle is rotated 90° clockwise around the origin?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mathstudent55
  • mathstudent55
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anonymous
  • anonymous
so what do i do?
mathstudent55
  • mathstudent55
Now you switch each ordered pair like this: (x, y) becomes (-y, x) Do this for each ordered pair

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mathstudent55
  • mathstudent55
A(1, 5) --> A'(-5, 1) B(-2, 1) --> B'(-1, -2) C(0, -4) --> C'(4, 0)
anonymous
  • anonymous
A=-5,1
anonymous
  • anonymous
oh okay thank you so much , this was great help!
mathstudent55
  • mathstudent55
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anonymous
  • anonymous
A triangle has coordinates A (1, 5), B (-2, 1) and C (0, -4). What are the new coordinates if the triangle is dilated with a scale factor of ? can you explain how to do this please?
mathstudent55
  • mathstudent55
Yes, you got A rotated correctly. I called the rotated points A', B', C'.
anonymous
  • anonymous
*of 1/5
mathstudent55
  • mathstudent55
Just multiply the x- and y-coordinates of each point by the dilation factor. That is a dilation with respect to the origin.
anonymous
  • anonymous
is it 40?
mathstudent55
  • mathstudent55
A(1, 5) becomes A'( (1/5)*1, (1/5)*5) = A'(1/5, 1) Then do the same for B and C. Multiply the x-coordinate and the y-coordinate of each point by the dilation factor, 1/5

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