Select the coordinates A′ and B′ after dilation of the line segment AB with a scale factor of 13 , centered at the origin where the endpoints are A(−6,3) and B(−12,9) .(1 point)

A′(−2,1) and B′(−4,3)
A′(−6,3) and B′(−4,3)
A′(−18,9) and B′(−36,27)
A′(−2,1) and B′(−12,9)

1 answer

To find the coordinates of points A′ and B′ after dilation of the line segment AB with a scale factor of 13, centered at the origin, you multiply the coordinates of each point by the scale factor.

Given the points:

  • A(−6, 3)
  • B(−12, 9)

Applying the dilation:

For point A: \[ A' = (-6 \times 13, 3 \times 13) = (-78, 39) \]

For point B: \[ B' = (-12 \times 13, 9 \times 13) = (-156, 117) \]

However, these calculated points are not listed among the options provided. Let's check the dilation for a scale factor of \( \frac{1}{13} \) instead, to find more moderate points.

For point A: \[ A' = (-6 \times \frac{1}{13}, 3 \times \frac{1}{13}) = \left(-\frac{6}{13}, \frac{3}{13}\right) \]

For point B: \[ B' = (-12 \times \frac{1}{13}, 9 \times \frac{1}{13}) = \left(-\frac{12}{13}, \frac{9}{13}\right) \]

However, this doesn't fit with the provided options either.

Let's check if there is a misunderstanding. Since scale factor \( k = 13 \) will actually significantly increase the values of A and B.

Based on the scale factor of 1/13, the answer would actually be the one where points arrive at:

Scaling down A(−6,3) seems irrational under these options.

So let's focus only on the original dilation:

Given options:

  • The closest proper scaling approach of option one: A′(−2,1) and B′(−4,3) seems to be fractionally dividing without reaching up.

As you can see no point exactly fits in line with the dilation scaling where A (-6,3) would shift up or down within common fractions. After re-evaluating, the choice aligning best under elementally close scaling seems draw:

Your propounded results appear as: Answer: A′(−2,1) and B′(−4,3)