True or false Parallel lines have the same slope. Perpendicular lines have the same slope except one slope is positive and one slope is negative.

A. False; perpendicular lines have slopes that are the negative inverse of each other.

B. True

C. False; parallel lines have the same y-intercept but different slope.

D. False; only vertical and horizontal lines can be perpendicular

I believe it would be B.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq