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

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Question 889167: Given the following equations:

y = 8t2 � 6t � 11

and

x = 2t � 7

find y as a function of x and then give the value for f(8).

That is, solve for y in terms of x and replace y with the "f(x)" notation.
Click here to see answer by Fombitz(32388)

Question 889385: given the function: h(x)={(3,2), (4,3), (1,6)}
determine:
h(4)
Click here to see answer by stanbon(75887)

Question 889408: Please help
The domain of the function f.x --> x^3-5 is D={0,1,2,3,4}. Find the range of f
Click here to see answer by stanbon(75887)

Question 889367: an object that is projected straight downward with initial velocity, v feet per second travels a distance s=vt+16t^2 where t= time in seconds. If ramon is standing on a balcony 84 feet above the ground and throws a penny straight down with an initial velocity of 10 feet per second, in how many seconds will it reach the ground
A. 2 seconds
B. 3 seconds
C. 6 seconds
D. 8 seconds
Click here to see answer by lwsshak3(11628)

Question 889486: I am not sure how to solve this algebraically.
y=1/3x+1
y=3/x+3
Please help!!!
Click here to see answer by Alan3354(69443)

Question 889486: I am not sure how to solve this algebraically.
y=1/3x+1
y=3/x+3
Please help!!!
Click here to see answer by rothauserc(4718)

Question 889539: if f(x)=(x^2)-2x, then f(2+h)=
a. (h^2)+ 4h +3
b. (h^2)+8h+3
c. (h^2)+2h+3
d. (h^2)-2h+3
e. (h^2)+2h
Click here to see answer by josgarithmetic(39618)

Question 889595: How do i draw a graph of y=|6a^2-x^2| where a>0 ?
Click here to see answer by Alan3354(69443)

Question 889511: If f(x) =10x-A/x-9 and (f) (-5) =0 , then what is value of A and where is f not defined?
Click here to see answer by rothauserc(4718)

Question 889611: Find the x - and y - intercepts of the given quadratic form

Click here to see answer by josgarithmetic(39618)

Question 889609: Complete the square to write the following function given below in the form
f(x) = a(x-h)^2 +k
f(x) = 3x^2 + 12x -2
substitute the missing values
Click here to see answer by josgarithmetic(39618)

Question 889681: given f(x)=6x+1, g(x)=8x+7 find f(g(x))
Click here to see answer by jim_thompson5910(35256)

Question 889683: Good day. I need help in knowing the exact steps to know the domain and range of the following equation -
f(x) =
Click here to see answer by josgarithmetic(39618)

Question 889727: If f(x) = x2 + x3, then f(-3) equals ________________.
Click here to see answer by luke94(89)

Question 889440: what is the dormain of

Click here to see answer by Fombitz(32388)

Question 889764: I have to complete the table for the following function f(x)=3x^2-3. They give me x=0, then 3 numbers with the plus and minus by them 1, 2,3.
Click here to see answer by Fombitz(32388)

Question 889941: could you explain to me please if f(x)=4^x, then f(x+1)-f(x) equals?
Click here to see answer by Edwin McCravy(20056)

Question 889940: could you please help me with if 1/(x+2)=3, find the value of 1/(x+3)
Click here to see answer by Edwin McCravy(20056)

Question 889942: please explain to me:Find the Natural domains of p(x)= 1/x^2-5x+6
Click here to see answer by rothauserc(4718)

Question 889943: Determine the natural domains of the function of x: 5/sqrt(x^2-4)
Click here to see answer by Fombitz(32388)

Question 889843: Let f(x)=19x+1. Find f(-16)
Click here to see answer by harpazo(655)

Question 890007: I forgot how to this I need your help please! I have no clue how to do it.
Write the functions of g(x)=2 and h(x)=-1 in the form F(x)=mx+k
Click here to see answer by Fombitz(32388)

Question 890138: HELP! MY HW SAYS TO DETERMINE THE DOMAIN AND RANGE FOR A PROBLEM THAT LOOKS LIKE THIS:
{(x,y) | x =2 }
{(x,y) | x^2y =16 }
{(x,y) | y= = |x| + 2 }
I MEAN I DONT GET IT. WHAT DOES THAT MEAN?
Click here to see answer by stanbon(75887)

Question 890155: HOW DO YOU FIND THE DOMAIN AND FUNCTION OF THESE?
1. xy=2
2.y =7
PLEASE EXPLAIN THE PROCESS. ESPECIALLY WHEN YOU FIND THE RANGE. IM REALLY REALLY CONFUSED WITH DOMAIN AND RANGE
Click here to see answer by Fombitz(32388)

Question 890187: Having issues trying to solve, any help is greatly appreciated.
Given the function f(x) = -7x^2 + 14x + 4, if x = 1, what is f(x)? What point is on the graph of f?
Click here to see answer by rothauserc(4718)

Question 890433: The function f is defined by f(x)=-2x^2-6x+7, x<-2. Find the inverse function and state the corresponding domain and range.
Click here to see answer by Theo(13342)

Question 890474: what will be the function form of this equation{pair of straight line}-:
a[x^2]+2hxy+b[y^2]=0
and my name is Harshit kasera.
if you get answer please inform me........
Click here to see answer by Fombitz(32388)

Question 890578: HOW TO DETERMINE THE domain and range for these?
{(x,y,) | y= -⎷ x+3 }
y= |x^2 -3x +2| +1
Click here to see answer by josgarithmetic(39618)

Question 890755: DOMAIN AND RANGE FOR ABSOLUTE VALUE? y=|-2x|
Click here to see answer by stanbon(75887)

Question 890783: If f(x)=2x+1 and g(x)=x-1/2 then f(g(x))=
Help?

Click here to see answer by nerdychic16(11)

Question 890790: sqrt x^2-1 and g(x)= sqrt x-1 which expression represents f(x)/g(x) for x>1?

Click here to see answer by MathLover1(20850)

Question 890728: Find the domain and range of the function f={(x,x^2/1+x^2):x belongs to R}.
Click here to see answer by Fombitz(32388)

Question 891575: Tell whether the function is linear. Then evaluate the function for the given value of x. The function is f(x) = x + 5; f(-2)
My work:
-2x = x + 5
-1x -1x
-3x = 5
-3x/-3 = 5/-3
x = -5/3
However, I'm not sure if I solved that correctly, and I don't know how to fid out if its a linear or not. Thanks for your help!!!
Click here to see answer by DrBeeee(684)

Question 891610: What is an equation of a parabola?
I am a bit confused about this question. I have four answer choices:
a. Y= x-1
b. Y = | x+3 |
c. Y = x^2+ 1
d. X = y+ 2
Thank you in advance.
Click here to see answer by nerdybill(7384)

Question 891643: The time it takes for an airplane production company to produce x number of their planes is given by 150x^-0.322(in thousand work-hours). How many work-hours will it take the production company to build their fifty-fifth airplane?
I do not understand this at all. Can someone please explain this to me?
Click here to see answer by lwsshak3(11628)

Question 891744: f(x)=x^2+6x+4
1. Find the vertex
2. State the range of the function
3. On what interval is the function decreasing?
Click here to see answer by lwsshak3(11628)

Question 891809: find the greatest value of 3+5x-2x^2 if x is a real no.
Click here to see answer by josgarithmetic(39618)

Question 891793: Give 6 pairs of functions f and g such that ( f o g )(x)=x^2-2x+1
Click here to see answer by Edwin McCravy(20056)

Question 891889: Given the function
f(x)=2-1/7x
Find a formula for the inverse function
Click here to see answer by josgarithmetic(39618)

Question 891941: Determine the value of k so that the lines kx-y=-1/3 and 3y=1-6x will intersect at 1 point?
Click here to see answer by josgarithmetic(39618)

Question 891942: Determine the value of k so that the lines kx-y=-1/3 and 3y=1-6x will not intersect?
Click here to see answer by josgarithmetic(39618)

Question 891943: Determine the value of k so that the lines kx-y=-1/3 and 3y=1-6x will coincide?
Click here to see answer by josgarithmetic(39618)

Question 892179: What is the solution of the inequality x^2<64
Click here to see answer by Fombitz(32388)

Question 892306: y=1|-1x+5|+4
Click here to see answer by josgarithmetic(39618)

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