Quiz Questions

Question 1

Which of the following is not true about the solution for a system of two linear equations in two unknowns?

Answer 1

its graph is the x-intercept of the graphs of the equations.

Question 2

Which of the following is true of an inconsistent system of two linear equations?

Answer 2

there is no solution

Question 3

Which of the following is true of an inconsistent system of equations below? 3x-2y=8
4x+y=7

Answer 3

the solution is on the line x=2

Question 4

Which of the following is an elementary row operation?

Answer 4

replace a row with a nonzero multiple of that row

Question 5

Addition of Matrices?

Answer 5

The sum of matrices is defined only when both matrices have the same size. A + B is the mxn matrix obtained by adding the corresponding components of A and B

Question 6

Scalar Multiplication of a Matrix

Answer 6

aA=(aaij) is the matrix obtained by multiplying each component of A by a. If aA = B = (bij), then bij = aaij for i=1,2,…,m and j=1,2,…n.