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

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 Algebra: Functions, Domain, NOT graphing Solvers Lessons Answers archive Quiz In Depth

 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 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 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 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 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)