Posted by ladybug on Friday, November 9, 2012 at 1:11pm.
Answer the following function.
f(x)=2x^2x1
A. Is the point (2,9) on the graph of f?
B. If x equals 2, what is fx? What point(S) are on the graph of f?
c. if f(x)= 1, what is x? what point(s) are on the graph of f?
d. what is the domain of f?
e. List the xintercpts, if any, of the graph of f.
f. List the yintercept if any, of the graph of f.
**Can someone please help me with this. I have no idea, i'm lost!!!

college algebra, Please help!!  Jennifer, Friday, November 9, 2012 at 4:56pm
A. is f(2) = 9? if it is, then the point (2,9) is on the graph. Otherwise, it's not on the graph
B.Plug 2 into f(x)
f(2) = 2 * (2^2)  2  1
The points on this graph are (2, f(2))
C. Solve
1 = 2*x^2x1
You should find two solutions for x.
D. The domain of f is the range of values for x for which f(x) is real. In this case, the domain is infinity to infinity
E. Find the solutions when x = 0:
2*0^2  0  1 = f(x=0)
F. Find the solutions when f(x) = 0
0 = 2*x^2 x  1
Solve for the two values of x that make this equation true
Answer This Question
Related Questions
 college algebra, Please help!!  Answer the following function. f(x)=2x^2x1 A...
 calculus  answer the questions about the following function f(x)= 10x^2/x^4+25 ...
 College Algebra  1.Answer the following for the given quadratic function. f(x...
 College algebra  Answer the questions about the following functions. f(x) = 14^...
 College Algebra  If the point P is on the graph of a function f, find the ...
 college algebra  Graph the following function using transformations. Be sure ...
 college algebra  Question 638522: Graph the following function using ...
 calculus  let f be the function f(x) = x^3 + 3x^2  x + 2 a. the tangent to the...
 College Algebra  The graph of a quadratic function f(x) is shown above. It has ...
 Math  Choose the three true statements about the graph of the quadratic ...
More Related Questions