Given x = 3 and the equation 2x + y = 5, what is y?

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Multiple Choice

Given x = 3 and the equation 2x + y = 5, what is y?

Explanation:
Solving for a variable by substituting the given value into a linear equation. Replace x with 3 in 2x + y = 5: 2(3) + y = 5, which becomes 6 + y = 5. Subtract 6 from both sides to isolate y, giving y = -1. Check by plugging back in: 2x + y = 6 + (-1) = 5, which matches. So y equals -1.

Solving for a variable by substituting the given value into a linear equation. Replace x with 3 in 2x + y = 5: 2(3) + y = 5, which becomes 6 + y = 5. Subtract 6 from both sides to isolate y, giving y = -1. Check by plugging back in: 2x + y = 6 + (-1) = 5, which matches. So y equals -1.

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