Solve the Problem $A = \left[ \begin{array} { r r r } - 1 & 1 & 3 \\ 1 & 5 & 1 \end{array} \right]$

question 87

Multiple Choice

Solve the problem.
-
a. Write a matrix A that represents the coordinates of the triangle. Place the x-coordinate of each point in the first row of A and the corresponding y-coordinate in the second row of A.
b. Use addition of matrices to shift the triangle 5 units to the right and 4 units down.

• A) a. \(A = \left[ \begin{array} { r r r } - 1 & 1 & 3 \\ 1 & 5 & 1 \end{array} \right]\) b. \(\left[ \begin{array} { r r r } 4 & 6 & 8 \\ - 3 & 1 & - 3 \end{array} \right]\)
• B) a. \(A = \left[ \begin{array} { r r r } - 1 & 1 & 3 \\ 1 & 5 & 1 \end{array} \right]\) b. \(\left[ \begin{array} { c c c } 4 & 6 & 8 \\ 5 & 9 & 5 \end{array} \right]\)
• C) a. \(A = \left[ \begin{array} { c c c } 1 & 5 & 1 \\ - 1 & 1 & 3 \end{array} \right]\) b. \(\left[ \begin{array} { r r r } - 3 & 1 & - 3 \\ 4 & 6 & 8 \end{array} \right]\)
• D) a. \(A = \left[ \begin{array} { r r r } - 1 & 1 & 3 \\ 1 & 5 & 1 \end{array} \right]\) b. \(\left[ \begin{array} { r r r } - 6 & - 4 & - 2 \\ 5 & 9 & 5 \end{array} \right]\)

---

Definitions:

Ostracism

The exclusion of an individual or group from wider society, often used as a form of social punishment or correction.

Cyberball

A virtual ball-tossing game used in psychological research to study social exclusion and its effects.

Unstable Self-esteem

Refers to fluctuations in a person's self-worth, often dependent on external validation or success.

Stable Self-esteem

A psychological condition where an individual consistently views themselves positively and feels secure about their self-worth, unaffected by external events or opinions.