Question: 9. (5 pts.) Let A be a 8 x 6 matrix. The rank of A is 4. What is the dimension of Nul(A)? Justify your

9. (5 pts.) Let A be a 8 x 6 matrix. The rank of A is 4. What is the dimension of Nul(A)? Justify your answer. OfWV 10. (5 pts.) Let H be a subspace of R". Define what it means for a set of vectors V1, ..., Vp in H to be a basis for H. Mor DO

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