Asked by Anonymous
Given: f(X)= 8-4x
A. Find f(-2)
B. Find x, when f(x)= 8
C. Graph the function.
D. State the domain and range of the function.
E. Use the graph to find x, when f(x) = 0 . Show details on the graph.
F. Use the graph to find f(x)when x = 3. Show details on the graph.
Answers
Answered by
Reiny
a) just plug in -2 for x
b) set 8-4x = 8 and solve for x
c) http://www.wolframalpha.com/input/?i=plot+y%3D+8-4x
d) set of real numbers for both
e) and f), use the graph I gave you
b) set 8-4x = 8 and solve for x
c) http://www.wolframalpha.com/input/?i=plot+y%3D+8-4x
d) set of real numbers for both
e) and f), use the graph I gave you
Answered by
Steve
the domain of <u>all</u> polynomials is all real numbers.
f(x) = 8-4x.
So, for f(-2), replace every x with -1:
f(-2) = 8-4(-2) = 8+8 = 16
To graph the function, you just need two points. You already have (-2,16). So, pick any other value for x (0 is an easy one!) and plot (0,f(0)).
Draw the line between the two points. The rest should be easy.
f(x) = 8-4x.
So, for f(-2), replace every x with -1:
f(-2) = 8-4(-2) = 8+8 = 16
To graph the function, you just need two points. You already have (-2,16). So, pick any other value for x (0 is an easy one!) and plot (0,f(0)).
Draw the line between the two points. The rest should be easy.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.