If p, q and r are not in AP and b = c, then the line joining the points X, Y and Z is parallel to
For the next two (02) items that follow : Let X(a, p), Y(b, q) and Z(c, r) be the points such that a, b and c are in AP.
- A. y-axis ✓
- B. x-axis
- C. y = x
- D. y = -x
Correct Answer: A. y-axis
Explanation
Given a, b, c are in AP and b = c, we must have a = b = c. Since all three points share the same x-coordinate, the line joining them is vertical and parallel to the y-axis.
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