How do you find 4X given #X=[(4,1), (-2,6)]# and #Y=[(0,-3)]# and #Z=[(-1,3), (0,-2)]#? Precalculus Matrix Algebra Multiplication of Matrices 1 Answer Fleur Jul 4, 2017 Multiply #4# with all the elements in #X#. Explanation: #4X = 4[(4,1), (-2,6)] = [(color(red)4*4, color(red)4*1), (color(red)4*-2, color(red)4*6)] = [(16,4), (-8,24)]# Answer link Related questions What is multiplication of matrices? How do I do multiplication of matrices? What is scalar multiplication of matrices? What are some sample matrix multiplication problems? How do I multiply the matrix #((6, 4, 24),(1, -9, 8))# by 4? How do I multiply the matrix #((3, 0, -19),(0, 7, 1), (1, 1/5, 2/3))# by -6? How do I multiply the matrix #((6, 4, 24),(1, -9, 8))# by the matrix #((1, 5, 0), (3, -6, 2))#? Is matrix multiplication associative? If #A=((-4, 5),(3, 2))# and #B=((-6, 2), (1/2, 3/4))#, what is #AB#? In matrix multiplication, does ABC=ACB? See all questions in Multiplication of Matrices Impact of this question 1691 views around the world You can reuse this answer Creative Commons License