College Algebra CLEP Prep Practice Exam

Question: 1 / 410

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

x = 2

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,

y = -2

y = 2

Report this question

Get the latest from Examzify