Question 26
Linear and Simultaneous EquationsIf 2x + y = 10, and y ≠ 0, which of the following is not a possible value of x?
- A.4
- B.5
- C.8
- D.10
Show the answer and explanation
Answer: B (5)
Explanation
If x = 5, then y = 10 − 2(5) = 0, which is not allowed. Every other value gives a non-zero y.