College Algebra CLEP Prep Practice Exam

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Prepare for the College Algebra CLEP Test with our comprehensive practice exam. Study with flashcards and multiple choice questions, each offering clues and detailed explanations. Achieve your best score and excel in your exam!

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Which of the following equations represents a vertical line?

y=2x+3
y=2
x=-5
x=5

The correct answer is: x=5

A y=2x+3 is not a vertical line. It is y-intercept form of a linear equation where slope is 2 and y-intercept is 3. As x increases, the line moves diagonally upwards creating a slope. B: y=2 is a horizontal line where y always has the same value of 2 regardless of the value of x. A vertical line has a constant value of x and can have any value for y. C: x=-5 is a vertical line where x always has the same value of -5 regardless of the value of y. However, the equation asked for a vertical line in terms of y, not x. D: This equation represents a vertical line where x always has the same value, which is 5, regardless of the value of y. A vertical line has an undefined slope and a constant x value.