Test — Test Answers
Each column of the matrix represents a vertex of a rectangle on the coordinate plane. If Fan scales the rectangle by finding 4A, what are the vertices of the scaled rectangle?
What are the values of c and d in the matrix subtraction below?
What is the solution to the system of linear equations represented by the matrix equations below?
What is the product?
What is the determinant of the coefficient matrix of the system ?
What is the value of C in the matrix equation below?
What is the determinant of ?
Which of the following sets of data would you likely represent with a square matrix?
Given , , .What is the value of matrix B if A + B = C?
The matrix represents the length of 12 in. and the width of 4 in. of a rectangle. If matrix multiplication is used to double the length and width of the rectangle, which rectangle represents the result of the matrix multiplication?
Jonas made the following matrix of temperatures for the first 4 days of January. He also made the following matrix of temperatures for the first 4 days of February. Which matrix shows the difference of January and February?
What is the product?
Jelani wrote the system of linear equations below to represent the number of student and adult tickets he and his friend sold to their school play.Jelani also wrote the augmented matrix to represent this system. Which matrix could Jelani have written?
Raj encoded a secret phrase using matrix multiplication. Using A = 1, B = 2, C = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. The matrix representing the encoded text is . What is the secret phrase? Determine the location of spaces after you decode the text.
If and , then which statement is true?
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