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

Tutors Answer Your Questions about Functions (FREE)

Question 613362: How to solve y= 1/4x-1 if the domain is
-4, -2, 0, 2, 4
Click here to see answer by solver91311(16897)

Question 613634: f(x)= 4/x+3
Click here to see answer by radh(108)

Question 613706: Solve the system of equations by graphing. Then classify the item.
3u+v=4
3u=v+8
Click here to see answer by ewatrrr(10682)

Question 613709: Solve the system of equations by graphing. Then classify the system.
y=-x-8
9x-8y=-21
Click here to see answer by ewatrrr(10682)

Question 613723: Solve the system of equations by graphing. Then classfy the system.
x+y=15
X-y=3
Click here to see answer by jim_thompson5910(28598)

Question 614056: DETERMINE WHETHER THE EQUATION DEFINES Y AS A FUNCTION OF X
X=l-7yl (absolute symbol = l)
Click here to see answer by solver91311(16897)

Question 614282: I can't remember how to get the answer to this problem. F(9) if f(x) = 12x

Click here to see answer by richwmiller(9143)

Question 614373: Determine if the given relation is function or not. Give its domain and range.

16. (-1, 2), (1, 3), (-1, 4), (2, 5) 17. (1, 1), (2, 2), (3, 3), (4, 4)

Click here to see answer by rapaljer(4667)

Question 614372: Determine if the given relation is function or not. Give its domain and range.

16. (-1, 2), (1, 3), (-1, 4), (2, 5) 17. (1, 1), (2, 2), (3, 3), (4, 4)

Click here to see answer by rapaljer(4667)

Question 614514: Solve by the elimination method.
6x-9y=7.5
7y-3x=-5
What is the solution to the system?
Click here to see answer by scott8148(6628)

Question 614727: Under what circumstances would the domain be something other than all real numbers? Provide an example.

Click here to see answer by rapaljer(4667)

Question 614733: Find range of
y=[(x+8)/(x-6)] +10
Click here to see answer by stanbon(57424)

Question 615047: HALLAR EL CONJUNTO SOLUCION DE 2X^2-5X+2=X^2-2X+6
Click here to see answer by stanbon(57424)

Question 614522: A student makes a $10.50 purchase at the bookstore with a $20 bill. The store has no bills and gives the change in quarters and fifty-cent pieces. There are 30 coins in all. How many of each kind are there?
How many quartes are there in the change?
How many fifty-cent piece are there?
Click here to see answer by asuar010(324)

Question 616157: if the varies directly as x what is the value of y in these ordered paris?
(5,20) and(15,y)
Click here to see answer by Alan3354(30993)

Question 42696: Hi, can you please tell me what are the excluded values of the following function: (3-5x)/5 ? Thanks!
Click here to see answer by fcabanski(874)

Question 616226: Find the intersection {2, 4, 6, 8} ( {3, 5, 7}
Click here to see answer by jim_thompson5910(28598)

Question 616217: Graph the system of inequalities.
x+2y is less than or equal to 6
2x+y is less thab or equal to 6
x is greater than or equal to 0
y is greater than or equal to 0
Click here to see answer by solver91311(16897)

Question 616455: How do you decide by looking at a graph or a curve whether y is defined as a function of x?
I did the vertical line test on few of the graphs, and decided that the ones that fail the test aren't a function of x. Is that how you determine if y is defined as a function of x.
Click here to see answer by josmiceli(9698)

Question 616269: If g(x)=1-2x, find the value of (g(x+h)-g(x))/h
Click here to see answer by jsmallt9(3296)

Question 616573: Bayside insurance offers two health plans. Under plan A, Giselle would have to pay the first $200 of her medical bills, plus 30% of the rest. Under plan B giselle would pay the first $220, but only 20% of the rest. For what amount of medical bills will plan B save giselle money? Assume she has over $220 in bills.
Click here to see answer by richwmiller(9143)

Question 616585: Use the compound interest formulas A = P(1 + r/n)^nt and A = Pe^rt to solve.
Find the accumulated value of an investment of $1900 at 10% compounded quarterly for 5 years.
Click here to see answer by ewatrrr(10682)

Question 616616: Use the intermediate value theorem to determine whether the polynomial function has a zero in the given interval.
f(x) = 8x3 - 10x2 + 3x + 5; [-1, 0]

Click here to see answer by ewatrrr(10682)

Question 616620: please help solve.
Use the Factor Theorem to determine whether x - c is a factor of f. If it is, write f in factored form, that is, write f in the form f(x) = (x - c)(quotient).
f(x) = 8x3 + 31x2 + 23x + 6; c = -3

Click here to see answer by solver91311(16897)

Question 616647: what is the answer to (2.6×10⁴)(3.8×10^-1) scientific notation

Click here to see answer by Edwin McCravy(8921)

Question 616621: please help solve thanks!
Use the given zero to find the remaining zeros of the function.
f(x) = x5 - 10x4 + 42x3 -124 x2 + 297x - 306 ; zero: 3i
Click here to see answer by Edwin McCravy(8921)

Question 616804: let h(x)=5x^2 and g (x)=3x+1. What is the product of h (-1) and g (-2)?
Click here to see answer by jsmallt9(3296)

Question 616915: 1. You are given the coordinates of the vertex (2,-2) and of a point (-9,3) on a parabola. Find the coefficients for the equation of the parabola.
Put in y=ax^2+bx+c form.
2.Given the functions
f(x) = 5x2 − 4x + 2
g(x) = 3x + 6
Compute the following (you must simplify each polynomial as far as possible to receive full credit) Use the ^ (shift-6 on the keyboard) to enter a power. So to enter x2 + 3x + 1, you would type x^2 + 3x + 1.
What is f(g(x))?
What is g(f(x))?
Click here to see answer by scott8148(6628)

Question 617100: Determine whether the ordered pair is a solution of the inequality.
(7, 20) ; 5y-6x>4
Is the ordered pair a solution of the inequality?
Click here to see answer by Alan3354(30993)

Question 617099: Two angles are complementary. The sum of the measure of the first angle and one fourth the second angle is 75.75 degrees. Find the measures of the angles.
*what is the measure of the smaller angle?
*what is the measure of the other angle?
Click here to see answer by nerdybill(6963)

Question 617102: Solve then graph.
t+20>=7
The solution is {t l t >= -13}
-what is the solution to the graph on a number line?
Click here to see answer by ewatrrr(10682)

Question 617098: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-500)+47.95, where it is assumed that t=>500 minutes. What times will keep costs between $89.45 and $132.70?
(Round to the nearest whole number)
Click here to see answer by nerdybill(6963)

Question 617123: can you give me a step by step example..
Click here to see answer by Alan3354(30993)

Question 617189: Find the range of f(x)=-x+4 for the domain {-3,-2,-1,1}
Click here to see answer by nerdybill(6963)

Question 617302: I have a question about "graph the system of inequalities."
X+3y<=9
3x+y<=9
X>=0
y>=0
Click here to see answer by josmiceli(9698)

Question 617385: Draw the graph of f(x). Thanks for your help.
Click here to see answer by jim_thompson5910(28598)

Question 617479: f(-1)=(-1)2-5(-1)+4
What would f(-1) =
Click here to see answer by Maths68(1474)

Question 617780: Solve using the multiplication principle.
-1/2x =-3/4
Click here to see answer by Alan3354(30993)

Question 617794: Find the domain of thr function.
p(x)=x^2-2x+10. What is the domain of p?
Click here to see answer by jim_thompson5910(28598)

Question 617808: Simplify.
-5[-10-(-4-9)]
Click here to see answer by jim_thompson5910(28598)

Question 617809: Solve using the multiplication principle.
9x=-72
Click here to see answer by jim_thompson5910(28598)

Question 617903: can i please have help in solving this linear function. f(x) has slope-2/3 and contains the point f(-3)=0. What is f(0)?
Click here to see answer by nerdybill(6963)

Question 617902: please help me solve this problem. what is the domain of the function f(x)=
x^17+5/x-3
Click here to see answer by nerdybill(6963)

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