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anonymous
 one year ago
Absolute Value Equations
5n3=n+9
I got 3 and 1 I keep plugging in 1 but it gives me positive 8 and not negative. Help?
anonymous
 one year ago
Absolute Value Equations 5n3=n+9 I got 3 and 1 I keep plugging in 1 but it gives me positive 8 and not negative. Help?

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marigirl
 one year ago
Best ResponseYou've already chosen the best response.2If you are trying to find the point of intersection (i.e which point do both of these equations meet) then n=3 is your only solution because the absolute function will not intersect at a negative axis..

marigirl
 one year ago
Best ResponseYou've already chosen the best response.2using n=3 you can obtain your coordinate of the point of intersection

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm supposed to solve each equation. Whatever the n is should match up if you plug them in.

marigirl
 one year ago
Best ResponseYou've already chosen the best response.2right i got it, so then at n=3 it intersects (3,12) also at n=1 it intersects (1,8)

marigirl
 one year ago
Best ResponseYou've already chosen the best response.2do the answers given to you show a negative 8 ? is that the question

anonymous
 one year ago
Best ResponseYou've already chosen the best response.05(3)3 is 12. 3+9 is 12. Good. 5(1)3 is 8. 1+9 is 8.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@marigirl is correct. n = 3 is the only solution because n = 1 is an extraneous (fake) solution.

marigirl
 one year ago
Best ResponseYou've already chosen the best response.2but that function we did  (5n3) so then that becomes 5n+3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes but the 1 is supposed to be substituted into the original equation to check the result. When you do that you get 8 on one side an 8 on the other, so 1 doesn't work for this equation

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440734476898:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0the absolute value means only use the positive value

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0is the original function (5n3) ?
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