Question 7
Binary OperationsThe operation * on the set ℝ of real number is defined by x * y = 3x + 2y − 1, find 3 * −1
- A.6
- B.−6
- C.9
- D.−9
Show the answer and explanation
Answer: A (6)
Explanation
3 * (−1) = 3(3) + 2(−1) − 1 = 9 − 2 − 1 = 6.
The operation * on the set ℝ of real number is defined by x * y = 3x + 2y − 1, find 3 * −1
Answer: A (6)
3 * (−1) = 3(3) + 2(−1) − 1 = 9 − 2 − 1 = 6.