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algebra ch. 4


What is true if two matrices, A and B, have the same dimensions? Their sum A+B is the matrix in which each element is the sum of the corresponding elements in A and B.
What is the definition of matrix multipulcation? Suppose A is an m x n matrix and B is an n x p matrix. then the product (AB) is the m x p matrix whose element in row i and column j is the product of row i of A and column j of B.
If two lines with slopes m1 and m2 are perpindicular, then what does m1m2 equal? -1
What transformation maps (x,y) onto (x+h,y+k)? This is a translation of h units horizontally and k units vertically.
What is true for a line under translation? It is parallel to its image.
What is a reflection? A transformation that maps a figure to its reflection image.
What is a transformation? A one-to-one correspondence between the points of a preimage and the points of an image.
Created by: jsica