College Math CLEP Prep Practice Exam

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What is the value of y when x = -1 in the equation y = 2x + 3?

The correct answer is: 5

When x = -1, the equation becomes y = 2(-1) + 3 = -2 + 3 = 1. None of the other options are correct because they do not take into account the coefficient of x, which is 2, and the constant value, which is +3, in the equation. Option A is incorrect because 2 multiplied by -1 is not equal to 0. Option B is incorrect because 2 multiplied by -1 is not equal to 1. Option C is incorrect because 2 multiplied by -1 is not equal to 2.