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

Tutors Answer Your Questions about Functions (FREE)

Question 800821: how do you write the equation to find the slope of a line?
Click here to see answer by Alan3354(69443)

Question 800226: List the domain of the function g(x) = x^2 + 1/ x^3 -x
Click here to see answer by tommyt3rd(5050)

Question 801152: Find the inverses of the following functions.
f(x)=x^3 +5
and f(x)= 6/7 +7
can someone help me with these I dont understand them can someone explain them to me.
Click here to see answer by stanbon(75887)

Question 800646: f(x)=(x+4)^2 +2
f((2)^2 -2 )

Click here to see answer by tommyt3rd(5050)

Question 801035: Suppose f(x)= 2x-1, find f(x) + f(h)
Click here to see answer by tommyt3rd(5050)

Question 801871: We have recently started working with finding vertical asymptotes in class and I came across a problem in my homework that I am not sure how to approach. I have to find the vertical asymptote of g(x)=(2x-1)(x+2)/(2x+3)(3x-4) If you could please help me I would appreciate it. Thanks
Click here to see answer by MathLover1(20850)

Question 801879: write the function for a line y-intercept of 19 and goes through the point (17,-83)
Click here to see answer by richwmiller(17219)

Question 801879: write the function for a line y-intercept of 19 and goes through the point (17,-83)
Click here to see answer by Cromlix(4381)

Question 801879: write the function for a line y-intercept of 19 and goes through the point (17,-83)
Click here to see answer by stanbon(75887)

Question 801887: I have to use a six-step procedure to graph a rational function but I am not sure how to start the problem because the first step is to factor and I am not sure how to do it with this problem. I have to sketch f(x)=x/1-x^2 If you could just help me find the vertical asymptotes I could figure out the rest. Thanks
Click here to see answer by stanbon(75887)

Question 801566: Given f(x)=xsquare +2x and g(x)=x square +5x-3,find the value fox such that f(x)=g(x).

Click here to see answer by Cromlix(4381)

Question 801908: What is the Domain of g(x)=/2x-6
The / is a Square root sign that includes the -6
Click here to see answer by josmiceli(19441)

Question 802409: How do you work the problem x to the second minus x equals 8
Click here to see answer by homeworkhedgehog(9)

Question 802467: i dont understand how we find the domain without graphing our problem is Find the range of the function for the domain {�3, 1, 4.5}.
y = �x + 1 but i dont understand
Click here to see answer by richwmiller(17219)

Question 803086: A car is traveling on the highway at 90 km/h. Express the distance d traveled as a function of the time t traveled.
Click here to see answer by Alan3354(69443)

Question 803090: Express the area A of a circle as a function of its circumference C.
Click here to see answer by Alan3354(69443)

Question 803092: What's the average rate of change for the sqrt 5x+7 between f(a) =16 & f(b)=25
Click here to see answer by Alan3354(69443)

Question 803139: A function is given. Determine the average rate of change of the function between the given values of the variable.
f(x) = 2x − 6; x = 2, x = 3
Click here to see answer by Alan3354(69443)

Question 803219: Graphing Nonlinear Functions:
f(x)=2(x+1)^2
The only mark on the graph I could accurately come up with was 2(0+1)^2=2 for the middle point of the Parabola. When I try to create symetry but putting in 1,2,-1,-2 I end up all over the place. What am I doing wrong?
Click here to see answer by josmiceli(19441)

Question 803335: solve for x:
0=20x-315x-990

Click here to see answer by rfer(16322)

Question 803502: I need to find the domain of the following function algebraically. f(x)=4x-7

Click here to see answer by cabdi809(1)

Question 804336: I understood everything until I got further on in the homework and now I do not get it! You do not have to solve the whole problem, I am very capable of doing that, but may you please at least help me set them up and explain them too so I can learn how to do it? Thank you so much!
Let f(x)=x^2 -1 and g(x)= 1- 2x. Find the indicated values for
A. g(2g(1))
B. g(1/f(3))
C. g(a+1)-g(a)
D. f(a+1)-f(a)
E. f(x+h) - f(x)/h

Click here to see answer by solver91311(24713)

Question 804496: What values are excluded from the domain of the function f(x)=(x-4) divide by x?
Click here to see answer by MathLover1(20850)

Question 804497: What values are excluded from the domain of the function f(x)=(2-x) divide by (5- x)?
Click here to see answer by josgarithmetic(39618)

Question 804949: how do I choose four values for x to make a function table for each function
f(x)= 5x-4
Click here to see answer by erica65404(394)

Question 805489: Find the domain and range of f(x) = Sqrt(5 - Sqrt(25 - x))
Click here to see answer by stanbon(75887)

Question 805507: If g(f(x)) = 9 - 6x, f(x) = 3x - 2, and g(x) = ax + b, then g(x) =
a) 21 - 18x
b) 21 - 12x
c) 10 - 2x
d) 10 - x
e) 5 - 2x

Click here to see answer by josgarithmetic(39618)

Question 805589: use the product rule and the chain rule to derive the quotient rule. thank you
Click here to see answer by Edwin McCravy(20056)

Question 805648: Determine whether the equation defines y as a function of x.
-5x+x^2+55=y
Click here to see answer by stanbon(75887)

Question 805648: Determine whether the equation defines y as a function of x.
-5x+x^2+55=y
Click here to see answer by josgarithmetic(39618)

Question 805664: I need to determine the domain of f(x)=
Click here to see answer by josgarithmetic(39618)

Question 805855: The function C(n)=2.5n+1700 represents the cost in dollars from producing n cell phone parts.
a) Given the domain for C(n) to be 0<= n <= 2500, find the range (output values) for this model. The range is _______________
Click here to see answer by oscargut(2103)

Question 805902: If g(x)=14-3(x) Solve the equation for 2
Click here to see answer by trx1150(14)

Question 805922: If f(x)= and (f∘g)(x)=x determine g(x)
Click here to see answer by AnlytcPhil(1806)

Question 805979: I need help solving this function! Thanks!
h(t) = -.02t^4 + 4t^3 - 24t^2 + 48t
h(8) = -.02t^4 + 4t^3 - 24t^2 + 48t
Click here to see answer by richwmiller(17219)

Question 805988: what is the domain and range of the polynomial 9x^5+3x^4-0-x^3+9x^2-9x+7
Click here to see answer by richwmiller(17219)

Question 805989: (9/(x^2+1))-(7/(x^2-16)) What is this equations domain?
Click here to see answer by stanbon(75887)

Question 806060: evaluate 2f(-3)+4
Click here to see answer by jim_thompson5910(35256)

Question 806067: 2/x+3=1/xsquared

Click here to see answer by mananth(16946)

Question 806719: What's the inverse of 3y+5=2/3x-9y

Click here to see answer by richwmiller(17219)

Question 806810: Hi! I was doing my homework and i ran into a challenging problem. its a table of domain and ranges, and it asks what the equation is that represents the table. the table says x: 9, 7, 5, 3 and y: -10, -6, -2, 2
im not asking for the answer but more of an explanation so i can do it in the future. thank you so much!!
Click here to see answer by solver91311(24713)

Question 806817: If f(x)=2/x, find an expression for f(x+a)-f(x)/a. How do I do this?
Click here to see answer by solver91311(24713)

Question 807535: Please help me solve these functions, with work shown.
Let f(x)=x+4 and g(x)=x^2+8x �3.
Find each of the following functions:
(f+g)(x)
(f�g)(x)
(fg)(x)
f∘g
Is there a calculator I can use for functions?
Click here to see answer by josgarithmetic(39618)

Question 807375: what is the range of the function f(x)=x squared -6 when the domain is (3,4,5)?

Click here to see answer by tommyt3rd(5050)

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