Exercise 8 Page 583

Parallel lines have identical slopes but different y-intercepts. Examining the different options, there are only two, A and B, where the slopes are equal to the given line. B:& y= - 1/3x-5 [0.8em] D:& y= - 1/3x+1 However, of these two lines, only D has a different y-intercept from the given line. D:& y=- 1/3x+ 1 Therefore, D is the only line that is parallel to the given line.