What is the value of x when y = 5? y = \(\frac{1}{2}\) x +
MATHEMATICS
WAEC 2010
What is the value of x when y = 5?
y = \(\frac{1}{2}\) x + 1
- A. 8
- B. 9
- C. 10
- D. 11
Correct Answer: A. 8
Explanation
when y = 5; x = ?; y = \(\frac{1}{2}\)x + 1
5 = \(\frac{1}{2}\)x + 1
5 - 1 = \(\frac{1}{2}\)x
4 = \(\frac{1}{2}\)x
x = 4 x 2
x = 8
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