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Triangle EFG has vertices [tex]\(E(-3,4)\)[/tex], [tex]\(F(-5,-1)\)[/tex], and [tex]\(G(1,1)\)[/tex]. The triangle is translated so that the coordinates of the image are [tex]\(E^{\prime}(-1,0)\)[/tex], [tex]\(F^{\prime}(-3,-5)\)[/tex], and [tex]\(G^{\prime}(3,-3)\)[/tex].

Which rule was used to translate the image?

A. [tex]\(T_{4,-4}(x, y)\)[/tex]

B. [tex]\(T_{-4,-4}(x, y)\)[/tex]

C. [tex]\(T_{2,-4}(x, y)\)[/tex]

D. [tex]\(T_{-2,-4}(x, y)\)[/tex]


Sagot :

To determine the rule used for translating triangle [tex]\( EFG \)[/tex], we need to find the vector that translates each vertex of the original triangle to the corresponding vertex in the image. We will compare the original coordinates of [tex]\( E, F, \)[/tex] and [tex]\( G \)[/tex] with the translated coordinates [tex]\( E', F', \)[/tex] and [tex]\( G' \)[/tex].

### Step-by-Step Solution:

1. Find the translation for vertex [tex]\( E \)[/tex]:
- Original coordinates: [tex]\( E(-3, 4) \)[/tex]
- Translated coordinates: [tex]\( E'(-1, 0) \)[/tex]

Calculate the translation vector:
[tex]\[ \Delta x_E = -1 - (-3) = -1 + 3 = 2 \][/tex]
[tex]\[ \Delta y_E = 0 - 4 = -4 \][/tex]
Thus, the translation vector for [tex]\( E \)[/tex] is [tex]\((2, -4)\)[/tex].

2. Find the translation for vertex [tex]\( F \)[/tex]:
- Original coordinates: [tex]\( F(-5, -1) \)[/tex]
- Translated coordinates: [tex]\( F'(-3, -5) \)[/tex]

Calculate the translation vector:
[tex]\[ \Delta x_F = -3 - (-5) = -3 + 5 = 2 \][/tex]
[tex]\[ \Delta y_F = -5 - (-1) = -5 + 1 = -4 \][/tex]
Thus, the translation vector for [tex]\( F \)[/tex] is [tex]\((2, -4)\)[/tex].

3. Find the translation for vertex [tex]\( G \)[/tex]:
- Original coordinates: [tex]\( G(1, 1) \)[/tex]
- Translated coordinates: [tex]\( G'(3, -3) \)[/tex]

Calculate the translation vector:
[tex]\[ \Delta x_G = 3 - 1 = 2 \][/tex]
[tex]\[ \Delta y_G = -3 - 1 = -4 \][/tex]
Thus, the translation vector for [tex]\( G \)[/tex] is [tex]\((2, -4)\)[/tex].

4. Verify the consistency of the translation vector:
We have obtained the same translation vector [tex]\((2, -4)\)[/tex] for all three vertices [tex]\( E, F, \)[/tex] and [tex]\( G \)[/tex]. Therefore, the translation rule is:
[tex]\[ T_{2,-4}(x, y) \][/tex]

Hence, the rule used to translate the image is [tex]\( \boxed{T_{2, -4}(x, y)} \)[/tex].