College Math CLEP Prep Practice Exam

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The following is a linear equation: y = 4x + 2. What is the y-intercept?

4
2
x
None of the above

The correct answer is: 2

The y-intercept of a linear equation represents the point at which the line crosses the y-axis. In the given equation, y = 4x + 2, the number that is added to the multiple of x (4x) is the y-intercept. This number is 2, hence the correct answer is B. Option A (4) is the coefficient of x and option C (x) represents the independent variable, neither of which are the y-intercept. Option D (None of the above) is incorrect because the y-intercept does exist in this equation.