Question 29
Matrices and DeterminantsGiven that (2 −3; 1 4)(−6; p) = (3; −26). Find the value of p.
- A.−8
- B.−5
- C.−4
- D.−3
Show the answer and explanation
Answer: B (−5)
Explanation
The first row gives 2(−6) − 3p = 3, so −3p = 15 and p = −5. The second row checks: −6 + 4(−5) = −26.