If y = 3x + 1, what is the value of y when x = 4?

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Multiple Choice

If y = 3x + 1, what is the value of y when x = 4?

Explanation:
Evaluating a linear expression by substituting a value for x. To find y when x is 4, plug in 4 for x in y = 3x + 1. This gives y = 3*(4) + 1. Multiply first: 3*4 = 12, then add 1 to get 13. The result follows the order of operations, with multiplication done before addition. A common mistake is treating the expression as 3*(x+1), which would give 3*(4+1) = 15, not the correct value for the given form.

Evaluating a linear expression by substituting a value for x. To find y when x is 4, plug in 4 for x in y = 3x + 1. This gives y = 3*(4) + 1. Multiply first: 34 = 12, then add 1 to get 13. The result follows the order of operations, with multiplication done before addition. A common mistake is treating the expression as 3(x+1), which would give 3*(4+1) = 15, not the correct value for the given form.

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