Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 228203: How do I rewrite "A piano teacher charges 35$ for one hour. After that its an extra 5$ for each additional hour." So that it does not represent a function?

Click here to see answer by user_dude2008(1861)

Question 228443: what is the answer 4y + 5y
__________
1yy-30 + 6y-12
Click here to see answer by rapaljer(4667)

Question 228510: x -1 0 1 2
f(x) -2 1 4 7
a.Write out an equation for f(x). Assume the function is linear
b. What is the slope? Is it negative or positive? What information do we get from the slope?
Click here to see answer by stanbon(57332)

Question 228543: Find the slope and the y-intercept.
f (x)=6x-3
The slope is ______
The y-intercept is (0,_____)
Is the slope -6?
I am stuck on this.
Click here to see answer by nerdybill(6958)

Question 228581: Find the slope, if it exists for y=-2x+4
Click here to see answer by rfer(12657)

Question 228691: TR= -60p2 + 240p
Click here to see answer by rapaljer(4667)

Question 228925: identify the range of the function what does that mean
Click here to see answer by JenniferTutors(83)

Question 229228: if x+y=1, and x-y=1, then y = ?
Click here to see answer by ankor@dixie-net.com(15649)

Question 229247: Determine whether the equation defines y as a function of x
2x+3=y-2
Please help, thanks
Click here to see answer by cornball3440(16)

Question 229498: Find the domain of the function:
g(x) = 7/2-5x
A. x is a real number and x/=0
B. x is a real number and x >= 2/5
C. x is a real number and x /= 7
D. x is a real number and x /= 2/5 ?
Click here to see answer by edjones(7569)

Question 229504: write the following without using logarithims.
ln a - ln b + xy = 0
Thanks!
Click here to see answer by nerdybill(6958)

Question 229675: Try to find f(x)andg(x)such that h(x)=f(g(x))(x)
h(x)1/(x^2-3)
Click here to see answer by solver91311(16877)

Question 229892: find the inverse of f(x)= 1/3x^3+1 is it one-to-one, why or why not?
Click here to see answer by stanbon(57332)

Question 229892: find the inverse of f(x)= 1/3x^3+1 is it one-to-one, why or why not?
Click here to see answer by jsmallt9(3296)

Question 229920: 1. The imput variable is called the _ variable.
2. The output variable is called the _ variable.
Click here to see answer by solver91311(16877)

Question 230026: Is the equation a function? Why or why not?
x^2+x^3+y=6x
I put it in slope-intercept form like so: y=6x-x^5
Also, is this a function, why or why not?:
y^2+2x-4=o
Thank you for your time
Click here to see answer by rapaljer(4667)

Question 230359: if g(x)=x squared+1 find the value of g(t)-4
Click here to see answer by user_dude2008(1861)

Question 230469: Evaluate the piecewise function at the given value of the independent variable.
f(x)=
{3x+1 if x<-1
{-2x-5 if x≥-1
;
f(2)

Click here to see answer by stanbon(57332)

Question 230516: I need to find the domain of: 7x^2-2x+12
How do I find the domain, please explain this to me so I know how to solve other problems like it. Please help!
Click here to see answer by rapaljer(4667)

Question 230577: Hi. I was wondering if you could help me with this problem.
Given that f(3)=12 and f(5)=-2 find f(1/7)
I've tried the f(x)=mx+b formula
f(3)=m(3)+b=12
f(5)=m(5)+b=-2
5-3=2m and -2-12=-14
M=-14/-2
M=-7
And this is where I get stuck.
Thank you
Click here to see answer by jsmallt9(3296)

Question 230615: Given functions f and g, perform the indicated operations.
f(x)=2x-6
g(x)=9x-8
find f-g.
Click here to see answer by stanbon(57332)

Question 230655: functions G and F determine: a) (fºg)4) b) (gºf)(2) c) (FºF)(1) d) (gºg)(0)
Function to solve F(x)= 3/x^2+1; g(X)=sqr X
Click here to see answer by jsmallt9(3296)

Question 230719: I need help simplifying this equation:

I feel dumb for asking, but I can't seem to figure how I should start simplifying these type of functions.
Thank you in advanced~
Click here to see answer by stanbon(57332)

Question 230847: f(x)=-9x/4 +7 Need the algebraically inverse function
Click here to see answer by likaaka(51)

Question 230938: Find the indicated composition.

(f*g)(8)
Click here to see answer by likaaka(51)

Question 231151: Evaluate: [4.2] + [-4.1] + 3[-4.1] - [-4]
This is a GIF (Greatest Integer Function) Problem!
Thanks!
Click here to see answer by user_dude2008(1861)

Question 231313: given the function h described by h(x)= 9(x)
find the following:
h(-12)=
h(5)=
h(32)=
Click here to see answer by stanbon(57332)

Question 231654: I need help with parent function transformations
f(x)=-4(x+2)3cubed
Click here to see answer by checkley77(12569)

Question 231765: given the function f described by f(x)=x+18 find each of the following
f(0)= 18
f(-15)=-15+18=3
f(-14)=-14+18=4
f(5)=5+18=23
f(c+12)=(c+12)+18= c+30
Click here to see answer by curioustoknow(5)

Question 231947: If f(2m + 1) = 24m^3 + 36m^2 + 26m, what is f(x)?
Click here to see answer by stanbon(57332)

Question 231974: Hi,

Given the function F described by F(z)=2z^(2)+8z-3
Find the function value f(-7)=?
Thank you
Click here to see answer by vleith(2825)

Question 232209: How do you find the domain and range for the following Points?
{(1,3) (1,0) (1,-2) ( 1,8)} And is it a function. Thank you
Click here to see answer by solver91311(16877)

Question 232753: Do the domain and range have to be put in numerical order?
Click here to see answer by rfer(12657)

Question 232754: How do you know if a relation is a function?
Click here to see answer by dpaulin(12)

Question 232902: hi im having trouble doing my aldebra homwork and im in grade six do u ahve any ideas that will help me with this
Click here to see answer by unlockmath(1599)

Question 232981: A photographer charges a sitting fee of$15 plus $3 for each pose. Write a function to describe the situation.
Click here to see answer by rfer(12657)

Question 233052: hello
Click here to see answer by Alan3354(30993)

Question 233228: State the domain for the following experssion
(x+5)/(x^2-36)
Click here to see answer by stanbon(57332)

Question 233239: Write the quotient
(2x^3+x^2-x+4)/(2x-5)
Click here to see answer by stanbon(57332)

Question 233260: Find f + g and f – g.

f(x)=3x squared plus 2x, g(x)=-x suared plus 4x
Click here to see answer by edjones(7569)

Question 233361: For the given functions f(x)= 3/(x-4) and g(x) = x/2 find (f(g(x)). I started the problem by substituting x/2 in for f(x), so I get to f(g(x)) = 3/((x/2) -4).
Click here to see answer by stanbon(57332)

Question 233372: f(x) = 2-x^2 find (f(3+h)-f(3))/h
f(3)=2-9=-7
f(3+h)=2-(3+h)^2=2-(h^2+6h+9)=-7-h^2-6h
so (f(3+h)-f(3)) = -7-h^2-6h - -7 = -h^2-6h
then (f(3+h)-f(3))/h = -h-6 can I make that h+6 or not?? Did I do this correctly?
Click here to see answer by stanbon(57332)

Question 233543: find the domain the x2 the 2 is squared
p(x)= x2 + y
Click here to see answer by rapaljer(4667)

Question 233549: Can anyone please help me make sense of this?? Thank you so much for your time!
Assuming that a, b and a/b(a divided by b) are whole numbers and b is not equal to 0. Explain why (a / b) xb= a ((a divided by b) x b = a).
Click here to see answer by stanbon(57332)

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