Question

Orlando is doing a math problem where he needs to dilate a triangle by a scale factor of four. The ordered pairs for his pre-image are (-2, 1), (8, 4), and (3, 0). Which of the following ordered pairs is not coordinates for a point in his image?

(12, 0)
(-8, 4)
(32, 16)
(2, 1)

Answer 1

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4.8/5

32

Aletocabens

Dilation refers to a non rigid motion where a figure is transform and its image has the same form but a different size measure.

Dilation is define by the rule (x,y)-- (kx, ky) where k represents the scale factor.

On this exercise is given that a triangle with vertices (-2,1), (8,4), and (3,0) was dilated by a scale factor of four, and it is asked to find the vertices of the image of the triangle after the dilation occurred.

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Pre-image Image

(-2,1) -- (-2*4,1*4) -- (-8,4)

(8,4) -- (8*4,4*4) -- (32,16)

(3,0) -- (3*4,0*4) -- (12,0)

The coordinates representing the vertices of the triangle's image are (-8,4), (32,16), and (12,0); meaning that the ordered pair which is not a coordinate for a point in the triangle's image is (2,1).