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NetherisIsTheQueen
04.12.2019 •
Mathematics
To solve the equation |x-9|=0.5x, kiana graphed the functions f(x)=|x-9| and g(x)=0.5x on the same set of coordinate axes. she then found that the graphs intersected at the points (6,3) and (18,9). finally, she concluded that the solutions of the equation |x-9|=0.5x are x=6 amd x=18. which of the following reasons best justifies kiana's conclusion.
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Ответ:
The answer is the option D
Step-by-step explanation:
we have
we know that
The solution of the system of equations is the intersection point both graphs
Using a graphing tool
see the attached figure
The solution are the points
and ![(18,9)](/tpl/images/0403/2468/693ad.png)
therefore
The solution of the equation
are
so
For![x=6](/tpl/images/0403/2468/bdba1.png)
For![x=18](/tpl/images/0403/2468/a79bb.png)
therefore
Ответ:
Option: D is the correct answer.
F(6)=G(6) and F(18)=G(18)
Step-by-step explanation:We know that the point of intersection of the graph of two function f(x) and g(x) is the set of possible x values at which both the function have the same output values.
i.e. if the graph of two functions intersect at x=a than that means:
f(a)=g(a)
Hence, here the graph of F(x)=|x-9| and G(x)=0.5x intersect at x=6 and x=18 ,
this means that:
F(6)=G(6)
and F(18)=G(18)
Ответ: