A. Yes; the slope of AC¯¯¯¯¯ is 1, and the slope of XZ¯¯¯¯¯¯ is −1. B. Yes; the slope of AC¯¯¯¯¯ is −1, and the slope of XZ¯¯¯¯¯¯ is 1. C. No; the slope of AC¯¯¯¯¯ is 1, and the slope of XZ¯¯¯¯¯¯ is not −1, it is 23. D. No; the slope of AC¯¯¯¯¯ is –1, and the slope of XZ¯¯¯¯¯¯ is not 1, it is 23.
