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What will be the y - coordinate of B’ if AB is dilated by a factor of, centered at the origin?


What Will Be The Y Coordinate Of B If AB Is Dilated By A Factor Of Centered At The Origin class=

Sagot :

Answer: 4/5 (choice B)

Reason:

B is located at (10,2)

Multiply each coordinate by the scale factor 2/5

  • 10*(2/5) = 20/5 = 4 is the x coordinate of B'
  • 2*(2/5) = 4/5 is the y coordinate of B'

This trick only works if the center of dilation is the origin.