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

Tutors Answer Your Questions about Functions (FREE)

Question 242077: Find the slope of a line satisfying the given conditions. Vertical, through (-8,8)
Click here to see answer by College Student(505)

Question 242141: f(x)=7x+4
Click here to see answer by rapaljer(4671)

Question 242346: find the domain of each function. express your answer using interval notation.
1.h(x)=square root of x divide by the absolute value of x
2. g(x)=absolute value of x divide by x
Click here to see answer by Fombitz(32388)

Question 242314: 2x+ x^1/2 -3=0
Click here to see answer by Fombitz(32388)

Question 242344: find f(x+h)/h-f(x)/h when f(x)=1/x+3
Click here to see answer by Fombitz(32388)

Question 242421: Does the function f(x) = x^2 - 2x + 2 have a maximum or minimum value?
Click here to see answer by JimboP1977(311)

Question 242421: Does the function f(x) = x^2 - 2x + 2 have a maximum or minimum value?
Click here to see answer by scott8148(6628)

Question 242722: for f(x)=2x-1 and g(x)=2x^2-3x, find {f/g}(3)
Click here to see answer by user_dude2008(1862)

Question 242721: given g(x)=x^2+4 and h(x)=x-1, find g[h(0)]
Click here to see answer by user_dude2008(1862)

Question 242811: The revenue achieved by selling x graphing calculators is figured to be x(32 - 0.2x) dollars. The cost of each calculator is $20. How many graphing calculators must be sold to make a profit of at least $155.80?
Click here to see answer by rapaljer(4671)

Question 242991: If y=7 is a horizonal asymptote of a radical function f, then which of the following must be true?
(A)lim f(x)=infinity
x approaches 7
(B) lim f(x)= -7
x approaches negative infinity
(C) lim f(x)= 7
x approaches 0
(D) lim f(x)= 0
x appraoches 7
(E) lim f(x)= 7
x approaches infinity
Click here to see answer by user_dude2008(1862)

Question 243003: The equation of the tangent line to the curve x^2 + y^2 =169 at the point (5,-12) is
(A) 5y-12x= -120
(B) 5x-12y= 119
(C) 5x-12y= 169
(D) 12x+5y= 0
(E) 12x+5y= 169
Click here to see answer by jim_thompson5910(35256)

Question 243018: what is the inverse function of this problem
6/x+5

Click here to see answer by user_dude2008(1862)

Question 243399: PLEASE HELP ME SOLVE THIS:
Determine whether the quadratic function f(x)=3x^+18x-23 has a maximun value or minimum value. Find the range of the function f(x)expressed using interval notation.
Click here to see answer by Theo(13342)

Question 243700: Find the domain and range of the INVERSE of the given function.
f(x)=square root x-3 (all under square root)
A. Domain: all real numbers; range [3, infinity)
b. domain:[0, infinity); range [3,infinity)
c. domain and range all real numbers
d. domain: [3,infinity); range [0,infinity)
I think the answer is A.
thanks
Click here to see answer by jim_thompson5910(35256)

Question 243708: Solve using the substitution method.
4m+n=23
m-4n=10
Click here to see answer by oberobic(2304)

Question 243864: FOR THE INDICATED FUNCTIONS F AND G,FIND FUNCTIONS F0G AND G0F, FIND THE DOMAINS.
F(X)=X^2;G(X)=X^3+2X+4
Click here to see answer by Theo(13342)

Question 244224: who would i graph f(x)= -(x-2)squared +3
Click here to see answer by checkley77(12844)

Question 244221: how do i graph f(x)=(x-1) cubed +1 its a quadratic but it also is a cubic function?
Click here to see answer by checkley77(12844)

Question 244410: What is the domain of the given problem over
Click here to see answer by rapaljer(4671)

Question 244410: What is the domain of the given problem over
Click here to see answer by edjones(8007)

Question 244502: Find the domain of:
f(x)=sq root(x^2+x-12)
Click here to see answer by jsmallt9(3758)

Question 244635: Find the center and the radius of the circle described by the equation
x2+y2+8x-2y+15=0
How can I find the answer to this problem?
Click here to see answer by Edwin McCravy(20056)

Question 244740: 1. Set X = {5, 7, 11, 13, 16,19}, Set Y = {1, 2, 5, 13, 19}
a. What is the union of Sets X and Y?
b. What is the intersection of Sets X and Y
c. Create your own set Z that is a subset of Set X.

Click here to see answer by solver91311(24713)

Question 244850: find the domain and range of the following equation?
y=3+5x+2y
Click here to see answer by rapaljer(4671)

Question 245317: what would the function rule be if the table said
that X f(x) and is said write the function rule??
-4 9
0 0
1 1
5 25
Click here to see answer by stanbon(75887)

Question 245321: how do i write a function rule if it says
pens are shipped to the supply office in boxes of 12 each
write a function rule to calculate the total number of pens when you know the number fo boxes?
calcualate the number of pens in 16boxes?
Click here to see answer by stanbon(75887)

Question 245326: you invest 209$ to buy shirts and then sell them for 9.50 each
write a function rule to determine your profit
use your rule to find your profit after selling 24 shirts
how many do you need to sell to get back your investment
Click here to see answer by stanbon(75887)

Question 245428: I am having trouble with the following problem:
Let f(x) {= 3x^2 - x+1, x < 5
-4x-3, x>5 (the arrow is underscored)
a) f(6)
b f(0)
c) f(-3)

Click here to see answer by dabanfield(803)

Question 245615: Find the Domain: y=7x/-6-x
Click here to see answer by edjones(8007)

Question 245882: Hi i really need help with this question: Alex states that the relation below is not a function. Lillian says that it is a function. Who is correct? Explain your reasoning.
Relation { (13,14), (12,5) , (16,7), (13, 14), (-2, 33), (13, 14 }
Explanation:
I'm not sure if it is a function or not, and i dont know how to explain it because of that.
Thanks -Drea
Click here to see answer by solver91311(24713)

Question 245922: if you have a f(x)=3x+9x(4) problen or that type of problem on atest would your answer be wrong if you just put =the answer, so does it have to be in an ordered pair???
Click here to see answer by stanbon(75887)

Question 245921: if you have a f(x)=3x+9x(4) problen or that type of problem on atest would your answer be wrong if you just put =the answer, so does it have to be in an ordered pair???
Click here to see answer by solver91311(24713)

Question 245970: If g(x) = √( x - 1) + √(2x), find all values of x for which g(x) = 6
Click here to see answer by edjones(8007)

Question 246034: consider the functions f(x)=-x^2+3x+10 and g(x)=2x^2+2x+11/4. what is the exact distance between the vertices of the graphs of these two functions? cannot use graphing to answer.
hopefully this will be my last question of the year.
Click here to see answer by jim_thompson5910(35256)

Question 246203: (a) Express the quadratic function in standard form.
(b) Find its vertex and its x and y intercepts.
(c) Sketch its graph.
f(x) = 2X^2 + X - 6
Click here to see answer by stanbon(75887)

Question 246656: find the zeros of the function f(x)= x^3+x^2-20x.
Thanks!
Click here to see answer by rapaljer(4671)

Question 246701: Rewrite each function to make it easy to graph using transformations of its parent function. describe the graph. find the domain and the range of each function.
y=(squarerootof(3x-5)) + 6

Here's how I solved it: 6 +(squarerootof 3(x=(5/3))
(squarerootof3) * (squarerootof(x-(5/3))) + 6
x - (5/3) > 0
x > (5/3)
the graph is 5 units down, 6 units to the left of the parent function.
D: x>(5/3)
R: y<= 0
thanks for the help in advance. :)
Click here to see answer by jsmallt9(3758)

Question 246794: Given that D(x) = 2x, select all of the following that are true statements.
1. D(x) is a function.
2. x is the dependent variable.
3. D(6) = 3
4. D(x) is a direct variation.
5. D(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).
Click here to see answer by solver91311(24713)

Question 246969: 1 1\3+ (-2\9)
Click here to see answer by stanbon(75887)

Question 247216: find the domain of each of the following rational functions.
2.) f(x) = 5x+6
2x-6
Simplify completely (I don't understand this)
6.) -7xy^2
28x^2
16.) x-2
8x^2-32
How do you put the line between the two sets of numbers?

Click here to see answer by solver91311(24713)

Question 247197: Find slope intercept equation of the line that has characteristics.
slope 3 and y-intercept (0,7)
Click here to see answer by scott8148(6628)

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