55. The 2 × 3 matrix represents △ABC with vertices A(-2,1), B(1 ,2), and C(3,-2) in the standard (x,y) coordinate plane. After a translation of △ABC, the matrix representing the translated triangle is . What is the value of k ?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

One is subtracted from each number in the second row, so k=(-2)-1=-3. Choose C.