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

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Question 210799: find the domain of function f(x) = root 2x - 3

Click here to see answer by Edwin McCravy(20056)

Question 210793: if g(x) =2 - x squared , then find g(3 + h) - g(3) over h

Click here to see answer by algebrapro18(249)

Question 210793: if g(x) =2 - x squared , then find g(3 + h) - g(3) over h

Click here to see answer by stanbon(75887)

Question 210701: y=3y/y+5
Click here to see answer by nyc_function(2741)

Question 211168: What is the domain of (x-5)/(x^2+5x+6)
Click here to see answer by nerdybill(7384)

Question 211336: given f(x+h)-f(x)/h where h is not zero.find and simplify the difference quotient for the following function f(-3x^2+9x+3)

2. find the difference quotient for the function f(x)=4x+3

these are two different ouestions.

9
Click here to see answer by stanbon(75887)

Question 211333: What is the pattern for the following ordered pairs (describe this pattern)?
(-2,3) (-1,0) (0,-1) (1,0) (2,3)
Click here to see answer by rfer(16322)

Question 211414: perform the request operation or operations. find the domain of each.
f(x)= square root of 2x+4 , g(x)= square root of 9x-16
Click here to see answer by rapaljer(4671)

Question 211436: how do I factor 14x^2y - 35xy
Click here to see answer by Alan3354(69443)

Question 211651: Solve for equation 8x2y+3y=2x for y as a function of x.
Click here to see answer by checkley77(12844)

Question 211659: If h(x)=x-4, find a function g(x) such that g(h(x))=x
g(x)=
Click here to see answer by HyperBrain(694)

Question 211856: find the slope-intercept equation of the line that has the given characteristics. slope 2.7 and y-intercept(0,-6)
Click here to see answer by RAY100(1637)

Question 211853: find the slope and y-intercept of the line. Write the fractional answer in lowest terms y=-8/7x -3/2
Click here to see answer by RAY100(1637)

Question 211859: write an equation of the line containing the given point and parallel to the given line.Express your answer in the form y=mx+b. (3,7);x+2y=5
Click here to see answer by RAY100(1637)

Question 212062: What is the domain of g(x)=x^4
Click here to see answer by stanbon(75887)

Question 212060: x+15/6-2x+8/2=-4
Click here to see answer by drj(1380)

Question 212263: I am the mother of a freshman, been years since school and she asked me for help, here is the problem...it's on function notation. j(x)=2x
Click here to see answer by Alan3354(69443)

Question 212291: whats is the domain of
f(x)= fourth root of x^2 + 3x
Click here to see answer by stanbon(75887)

Question 212534: When Harry and Ron use magic there wands create a ball of light equidistance between them. If Harry is standing at the point (4,3) and the ball of light is at the point (2,6) where must Ron be standing?
Click here to see answer by Alan3354(69443)

Question 212533: Steve and Lynn are running away from something. Steve ran 3 miles West. Lynn ran the square root of 2 miles North East. Steve and Lynn have walkie talkies with a 4 miles range. Will Steve and Lynn be able to reach each other on the walkie talkies?
Click here to see answer by Alan3354(69443)

Question 212550: Find the value of k for which each question is an identity.
k(3x-2)=4minus6x
Click here to see answer by stanbon(75887)

Question 212614: What is the domain and range of c(g)= 3.03g
Click here to see answer by rapaljer(4671)

Question 212812: solve by substitution method
9x+4y= -55
-7x+y= 51
Click here to see answer by drj(1380)

Question 212812: solve by substitution method
9x+4y= -55
-7x+y= 51
Click here to see answer by MathTherapy(10552)

Question 212828: solve by the elimination method
0.3x-0.2y=4
0.2x+0.5y= -21/23
Click here to see answer by drj(1380)

Question 211851: What is the domain of p(x)=2x-2
Click here to see answer by drj(1380)

Question 212877: solve by the elimination method. What is the solution of the system? Simplify your answer.
6x - 9y=7.5
7y - 2x = -4.5
Click here to see answer by drj(1380)

Question 212875: solve by elimination method and give an ordered pair.
x+2y=11
-x+5y=17
Click here to see answer by rapaljer(4671)

Question 212922: Which is the inverse of the function f (x) = 3x - 1?
A. f^-1(x)= 1 / 3x - 1
B. f^-1(x)= x/3 + 1
C. f^-1(x)= x + 1 / 3
Click here to see answer by rapaljer(4671)

Question 212921: What is the domain of the function y = square root(x - 7)?
A. x ≥ 7
B. x ≤ 7
C. all real numbers
Click here to see answer by rapaljer(4671)

Question 212978: given the function defined by y=-7x^2+3x-8
determine whether function opens upward or downward
Click here to see answer by vleith(2983)

Question 212980: find vertex of the parabola
y=x^2-8x-5
vertex (?,?)
Click here to see answer by drj(1380)

Question 213119: what is the domain of the function f(x) = (x squared - 1 )(-1) (the neg 1 is a power)
Click here to see answer by jonvaliente(64)

Question 213118: what is the domain of the function f(x) = (x squared - 1 )(-1) (the neg 1 is a power)
Click here to see answer by rapaljer(4671)

Question 213273: Find the exponential function f(x)= Ca ^x which contains the points (2,45) and (5,1215)
please show work i would like to learn this process thanks
Click here to see answer by josmiceli(19441)

Question 213293: What is h(-2.5) if h(z) = z� + 3.5z � 2.75.
Click here to see answer by Alan3354(69443)

Question 213293: What is h(-2.5) if h(z) = z� + 3.5z � 2.75.
Click here to see answer by checkley77(12844)

Question 213157:
If lim f(x)=9 and lim f(x) =9, then lim f(x) exists; x-->5^- x-->5⁺ x-->5 to what value does it converge to?

Click here to see answer by Edwin McCravy(20056)

Question 213193: Solve y = -2x+7 if the domain is {-2,0,4,7}.
Click here to see answer by rapaljer(4671)

Question 213192: Find the domainof x - 2y = 1 if the rainge is {-2,0,5,8}.
Click here to see answer by rapaljer(4671)

Question 213443: What is the domain of y = rqst(4x + 1)
Click here to see answer by rapaljer(4671)

Question 213477: Consider the following function:
F(x): 1-x x<-1
x -1<=x<2
(x-2)^2 x>=2
Determine the values of lim f(x)
x-->a
Click here to see answer by stanbon(75887)

Question 213488: I am still unsure when it comes to functions. I have a question that is as follows: Is f(x) = x^2 + 2x - 3 a one-to-one function? Explain your answer.
When figuring out the problem if f(a) = f(b) then my answer would be no as
a^2 + 2a - 3 = b^2 + 2b -3 does not factor down to a = b.
Am I figuring this correctly?
Thank you = Lori
Click here to see answer by Theo(13342)

Question 213662: Find the domain of : y = sqrt(4x+1)
Click here to see answer by edjones(8007)

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