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Given f(x) = 9, find x if f(x) = -3x – 3.​
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Given f(x) = 9, find x if f(x) = -3x – 3.​

User Etheryte
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1 Answer

5 votes

Question:


f(x)=9 , f(x)=-3x-3

Solution:

When
f(x) is equal to 9 that means
f(x)=-3x-3 is equal to 9 too which you can solve by:


9=-3x-3\\ 9+3=-3x-3+3\\ 12=-3x\\(12)/(-3)=(-3x)/(-3)\\-4=x

Answer:


x=-4

Check:


-3(-4)-3\\-12-3\\=9

Hope this was helpful.

User Be Kind
by
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