Are these two lines perpendicular?
Line 1: y-1=3(x+7)
Line 2: y-19=-1/2(x+1)...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 06.02.2021 02:20, amy1912
Are these two lines perpendicular?
Line 1: y-1=3(x+7)
Line 2: y-19=-1/2(x+1)
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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