if f(x) = 3x+a and f( 1) =7 find a and f(4) in answer
Answers
Answered by
0
F(1)=7
Then
We may write
F(1)= 3(1)+a=7
Then finally
a =7-3= 4
That’s why a = 4.
And by given questions
F(4) =3(4) +4
F(4) = 16
Then
We may write
F(1)= 3(1)+a=7
Then finally
a =7-3= 4
That’s why a = 4.
And by given questions
F(4) =3(4) +4
F(4) = 16
Answered by
5
Answer:
Given,
f(x) = 3x+a
substituting x= 7 in f(x) we get,
f(1)= 7
3+a= 7
a= 4 -------------(I)
substituting x= 4 in f(x) we get,
f(4)= 3(4)+a
= 12+4 [from (I)]
= 16
therefore,
a= 4
f(4)= 16
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