Dilate the parallel lines EF

and GH
with a scale factor of 16
and a center point of dilation at the origin (0,0)
. Line EF
contains the points E(−6,6)
and F(−12,12)
. Line GH
contains the points G(−6,−6)
and H(−12,0)
. Describe the effect of the dilation of the parallel lines.(1 point)
Responses

After dilation, the lines are six units farther from the point of dilation. The resulting points are E′(0,12)
, F′(−6,18)
, G′(0,0)
, and H′(−6,6)
. The dilated lines are parallel.
After dilation, the lines are six units farther from the point of dilation. The resulting points are upper E prime left parenthesis 0 comma 12 right parenthesis , upper F prime left parenthesis negative 6 comma 18 right parenthesis , upper G prime left parenthesis 0 comma 0 right parenthesis , and upper H prime left parenthesis negative 6 comma 6 right parenthesis . The dilated lines are parallel.

After dilation, the lines are six units farther from the point of dilation. The resulting points are E′(−1,1)
, F′(−2,2)
, G′(−1,−1)
, and H′(−2,0)
. The dilated lines are parallel.
After dilation, the lines are six units farther from the point of dilation. The resulting points are upper E prime left parenthesis negative 1 comma 1 right parenthesis , upper F prime left parenthesis negative 2 comma 2 right parenthesis , upper G prime left parenthesis negative 1 comma negative 1 right parenthesis , and upper H prime left parenthesis negative 2 comma 0 right parenthesis . The dilated lines are parallel.

After dilation, the lines are six units closer to the point of dilation. The resulting points are E′(−1,1)
, F′(−2,2)
, G′(−1,−1)
, and H′(−2,0)
. The dilated lines are parallel.
After dilation, the lines are six units closer to the point of dilation. The resulting points are upper E prime left parenthesis negative 1 comma 1 right parenthesis , upper F prime left parenthesis negative 2 comma 2 right parenthesis , upper G prime left parenthesis negative 1 comma negative 1 right parenthesis , and upper H prime left parenthesis negative 2 comma 0 right parenthesis . The dilated lines are parallel.

After dilation, the lines are six units farther from the point of dilation. The resulting points are E′(−36,36)
, F′(−72,72)
, G′(−36,−36)
, and H′(−72,0)
.The dilated lines are parallel.

1 answer

To determine the effect of the dilation of the parallel lines EF and GH with a scale factor of 16 and a center of dilation at the origin (0,0), we first need to calculate the coordinates of the resulting points after dilation.

The formula for dilation centered at the origin with a scale factor k is: \[ (x', y') = (k \cdot x, k \cdot y) \]

For line EF:

  • Point E(-6, 6): \[ E' = (16 \cdot -6, 16 \cdot 6) = (-96, 96) \]
  • Point F(-12, 12): \[ F' = (16 \cdot -12, 16 \cdot 12) = (-192, 192) \]

For line GH:

  • Point G(-6, -6): \[ G' = (16 \cdot -6, 16 \cdot -6) = (-96, -96) \]
  • Point H(-12, 0): \[ H' = (16 \cdot -12, 16 \cdot 0) = (-192, 0) \]

Now, let's summarize the results:

  • E'(-96, 96)
  • F'(-192, 192)
  • G'(-96, -96)
  • H'(-192, 0)

The dilated lines EF and GH are still parallel to each other since they have been scaled from their original positions while maintaining their relative orientation and distance from the center of dilation.

Each point has moved further away from the origin by a factor of 16, so the distance from the center of dilation has multiplied. Hence, we cannot say that the lines are only "six units farther" or "closer" but that they have scaled according to the factor.

Therefore, the correct response based on the calculations is: After dilation, the lines are farther from the point of dilation. The resulting points are E'(-96, 96), F'(-192, 192), G'(-96, -96), and H'(-192, 0). The dilated lines are parallel.