52. In the figure below, line q in the standard (x, y) coordinate plane has equation -2x + y = 1 and intersects line r, which is distinct from line q, at a point on the x-axis. The angles, ∠a and ∠b, formed by these lines and the x-axis are congruent. What is the slope of line r ?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

The angle a and angle b are equal, indicating that the absolute values ​​of the slopes of the two lines are the same, and the slope of r is the negative number of q, that is, negative two. Choose F.