Can anyone help:
If i am told to evaluate a function for a given value of X and also determine the domain and range, how will i do so for the following:
f(x)=2; f(-4)
I don't get this problem, and if i graph this will the graph be liner or not?
Thank you very much in advance for any help.
2007-06-28 14:13:50 · 2 answers · asked by jumba 1 in Science & Mathematics ➔ Mathematics
f(x) = 2
This means that f operates on x to give 2.
Thus f(4) = 2 , f(7) = 2 , f(20) = 2 , f(- 4) = 2 ,f(0) = 2 etc. etc
In simple words no matter what value of x , y = 2
A graph would show that f(x) = 2 is a horizontal line that passes thro (4,2) , (7,2) ,(20,2) etc
Line is horizontal , therefore gradient (slope) = 0.
Domain is x a member of set of Real numbers.
Range is y = 2
2007-07-02 06:50:29 · answer #1 · answered by Como 7 · 0⤊ 0⤋
domain: all real numbers
renge:{2}
f(-4)=2
the graph is yes, a line
2007-06-28 21:18:01 · answer #2 · answered by Theta40 7 · 0⤊ 0⤋