Provide an appropriate response.If A is a 6 × 7 matrix and A+ K = A, what can you say about K?
A. K is a 6 × 7 matrix and all entries of K are equal to 0.
B. K is a 6 × 7 matrix and each of its entries is the negative of the corresponding entry of A.
C. K is a 7 × 6 matrix and each of its entries is the negative of the corresponding entry of A.
D. K is a 7 × 6 matrix and all entries of K are equal to 0.
Answer: A
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A. 
B. 
C. 
D. 
Divide. If the division is not possible, write "undefined."
A. 61 R2 B. 61 R4 C. 61 D. 63
Write an equation for the parabola with vertex at the origin.Focus (0, 3)
A. y = 
x2
B. y2 = 3x
C. y2 = 12x
D. y = 
x2
Solve the system by graphing. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. 3x + y = 13 9x + 3y = 39
A. Inconsistent, ? B. Dependent, (x, - 3x + 13) C. (5, -2) D. (0, 13)