Whieh of the follm"'ing pairs of lines arc perpendicular (a) x= 2+21 x=2 + 1 )"= - 3-31
Chapter 5, Problem 19(choose chapter or problem)
Whieh of the follm"'ing pairs of lines arc perpendicular? (a) x= 2+21 x=2 + 1 )"= - 3-31 and y =4 - 1 :;: = 4+41 :;: =5 - 1 (b ) x = 3 - 1 )"=4+41 :;: =2+21 x = 21 )" = 3 - 21 :;: =4+21
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