If y = 2x + 3 and x = -1, what is y?

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Multiple Choice

If y = 2x + 3 and x = -1, what is y?

Explanation:
Evaluating a linear expression by substitution: plug the given x into y = 2x + 3. With x = -1, y = 2(-1) + 3 = -2 + 3 = 1. So y equals 1. This shows how a linear equation responds to a specific x value; different x values would give different y’s (for example, x = -2 yields -1, x = 1 yields 5, and so on).

Evaluating a linear expression by substitution: plug the given x into y = 2x + 3. With x = -1, y = 2(-1) + 3 = -2 + 3 = 1. So y equals 1. This shows how a linear equation responds to a specific x value; different x values would give different y’s (for example, x = -2 yields -1, x = 1 yields 5, and so on).

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