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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What is the equation of the axis of symmetry for the graph of y = -2x2 + 5x - 1?

x = 2
x = -2
y = -2
y = 2

The correct answer is: x = -2

The equation of the axis of symmetry for a parabola in the form of y = ax^2 + bx + c is x = (-b/2a). In this case, a = -2 and b = 5. Plugging these values into the equation gives x = (-5/2(-2)) = -5/(-4) = 5/4. So, the axis of symmetry for the given graph is x = 5/4. Option A, x = 2, is incorrect because it does not take into account the negative coefficient in front of x^2. Option C, y = -2, is incorrect because it is not an equation for a line. The axis of symmetry is a vertical line, not a horizontal line. Option D, y = 2, is incorrect for the same reason as option C. Thus, option B,