Chapter 3 - Parallel and Perpendicular Lines - 3-8 Slopes of Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 202: 28

answers will vary

Here, we must choose two slopes that are opposite reciprocals. For this problem, we will choose 1 and -1. Since y = mx+b, where b is the y intercept, we can choose any non-zero value for b (since the equation cannot go through the origin). We will choose 5. Thus: $y = -x+5$ and $y = x+5$