Translation Vector
1. The problem states that point K is the image of point J under a translation vector \(\begin{pmatrix} m \\ n \end{pmatrix}\), and the distance between J and K is 13 units.
2. Given coordinates: \(J(-5, -3)\) and \(K(0, y)\).
3. The translation vector is \(\begin{pmatrix} m \\ n \end{pmatrix} = \begin{pmatrix} 0 - (-5) \\ y - (-3) \end{pmatrix} = \begin{pmatrix} 5 \\ y + 3 \end{pmatrix}\).
4. The distance \(JK = 13\) units, so using the distance formula:
$$\sqrt{(0 - (-5))^2 + (y - (-3))^2} = 13$$
which simplifies to
$$\sqrt{5^2 + (y + 3)^2} = 13$$
5. Square both sides:
$$25 + (y + 3)^2 = 169$$
6. Subtract 25 from both sides:
$$(y + 3)^2 = 144$$
7. Take the square root:
$$y + 3 = \pm 12$$
8. Solve for \(y\):
- If \(y + 3 = 12\), then \(y = 9\)
- If \(y + 3 = -12\), then \(y = -15\)
9. The point K is at \((0, y)\), so possible K points are \((0, 9)\) or \((0, -15)\).
10. The translation vectors are:
- For \(y = 9\): \(\begin{pmatrix} 5 \\ 9 + 3 \end{pmatrix} = \begin{pmatrix} 5 \\ 12 \end{pmatrix}\)
- For \(y = -15\): \(\begin{pmatrix} 5 \\ -15 + 3 \end{pmatrix} = \begin{pmatrix} 5 \\ -12 \end{pmatrix}\)
11. From the options given:
A \(\begin{pmatrix} -5 \\ 12 \end{pmatrix}\)
B \(\begin{pmatrix} 5 \\ -12 \end{pmatrix}\)
C \(\begin{pmatrix} 12 \\ 5 \end{pmatrix}\)
D \(\begin{pmatrix} 5 \\ 12 \end{pmatrix}\)
12. The correct translation vectors are options B and D.
Final answer: The translation vector \(\begin{pmatrix} m \\ n \end{pmatrix}\) is either \(\begin{pmatrix} 5 \\ 12 \end{pmatrix}\) or \(\begin{pmatrix} 5 \\ -12 \end{pmatrix}\).