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Momo
 5 years ago
What is the slope of a line perpendicular to the line 4x  5y = 8?
Momo
 5 years ago
What is the slope of a line perpendicular to the line 4x  5y = 8?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0y = (8  4x) / 5 y = 8/5  (4/5)x y = (4/5)x + 8/5 the perp. slope is 1 / (4 / 5) = 5 / 4

momo
 5 years ago
Best ResponseYou've already chosen the best response.0i was thinking that. so it would be 5/4?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if M is a slope, then its perpendicular is 1 / M in this case, M = 4/5 so perp. to M is 5 / 4

momo
 5 years ago
Best ResponseYou've already chosen the best response.0well, that isn't one of my options. my options are 8, 4, 4/5, and 5/4 i was thinking maybe the  would be cancelled out and it would be 4/5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0y = Mx + b y = (4/5)x  (8/5) perp = 1/M = 1/ (4/5) = 5/4

momo
 5 years ago
Best ResponseYou've already chosen the best response.0awesome! thanks :). my original thought haha
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