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Triangle mnp is dilated by a scale factor of 2, resulting in triangle m'n'p'.

y
5
3m1
m
2
pi
p
-5
- 4
ng
- 1
3
3
What are the coordinates of the center of dilation for this transformation?

Triangle mnp is dilated by a scale factor of 2, resulting in triangle m'n'p'. y 5 3m-example-1

2 Answers

14 votes

Answer:

-5,1

Explanation:

User Sara Nikta Yousefi
by
4.5k points
12 votes

The coordinates of the center of dilation for this transformation are: A. (-5, 1).

In this exercise, we would have to dilate the coordinates of the preimage by using a scale factor of 2 centered at a point (a, b) by using this mathematical expression:

(x, y) → (k(x - a) + a, k(y - b) + b)

Based on the coordinates of the image P' (3, 1), we have;

P' (3, 1) → (2(3 - a) + a, 2(1 - b) + b)

P' (3, 1) = (6 - 2a + a, 2 - 2b + b)

P' (3, 1) = (-6 - a, 2 - b)

Next, we would set up a system of equations from the above with respect to the pre-image P (-1, 1);

-1 = -6 - a

a = -6 + 1

a = -5

1 = 2 - b

b = 2 - 1

b = 1

Therefore, the coordinates of the center of dilation are (-5, 1).

Missing information:

Triangle MNP is dilated by a scale factor of 2, resulting in triangle M'N'P'.

What are the coordinates of the center of dilation for this transformation? (-5,1)

(-3,0)

(-1,1)

(0,0).

User Jason Benson
by
4.5k points