# 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 33997: Find the slope of the line... 3x - 6y = 18 Click here to see answer by longjonsilver(2297)

 Question 34155: using foil method find the product (-c-d)2 i got -c2+cd-d2 is that correct? Click here to see answer by longjonsilver(2297)

 Question 34174: What is the formula to find the distance between 2 points on a graph. For example the points are (-2,5) & (-3,-1) Click here to see answer by venugopalramana(3286)
 Question 34174: What is the formula to find the distance between 2 points on a graph. For example the points are (-2,5) & (-3,-1) Click here to see answer by Prithwis(166)

 Question 34365: For the function y=4^x, state the domain and range. Click here to see answer by ichudov(499)

 Question 34379: Find the y intercept for the function y=4^x. Click here to see answer by lyra(94)

 Question 34355: Using the index of a sequence as a domain and the value of the sequence as the range, is a sequence a function? Thank you Click here to see answer by stanbon(57949)

 Question 34496: Page 210 Problem 44.g(10) Question; Let g(x)= -x squared + 4x+1. Click here to see answer by lyra(94)

 Question 34538: Need help with the following composition of functions problem. When I worked this problem I came up with (a) -2 and (b) 12: 5. Given that f(x)=1-3x and h(x)= (5x^2)+4x , find each of the following (a) (f o h)(-1) (b) (h o f)(1) Click here to see answer by lyra(94)

 Question 34682: Solve the equation. Beware of extraneous solutions. (15/x) + ((9x-7)/(x+2)) =9 Click here to see answer by stanbon(57949)

 Question 34664: the function f(x)= x/3-x find an expression for (f to the negative 1 power) f-1 (x) in addition state the domain of both f and f (-1) Click here to see answer by longjonsilver(2297)

 Question 34802: I study and do well on homework but for some reason I forget everything when I take a test, What do i do? Click here to see answer by longjonsilver(2297)

 Question 34888: Can you help with functions involving square roots? Click here to see answer by Prithwis(166)

 Question 35056: Hello, My name is Kristin and my time for the college placement exam is approaching and I need help!!!!!so please help f(a)=2a-1 and g(a)=a^2, then g(f(a))=? I believe this is setup like a^2(2a-1), but then I get confused after this point. I don't know whether I should multiply them by each other and then pull out the a^2, which would bring back to the initial equation. I am lost. THANK YOU IN ADVANCE, KRISTIN Click here to see answer by venugopalramana(3286)

 Question 35046: a) find the horizontal,vertical, and or slant asymptotes b) find the x and y intercepts f(x)=3x/x+1 I came up with -1 vert ---- 3 or 0 for horizontal ----and 0 as x intercept and could not figure out y Of course we have to graph where do I get help for that? Please help Click here to see answer by venugopalramana(3286)

 Question 35178: Why might function notation be important? What are the reasons for function notation? Click here to see answer by Nate(3500)

 Question 35301: I messed up and didn't send the whole problem, Please help!! In most businesses, increasing prices of their product can have a negative effect on the number of customers of the business. A bus company in a small town has an average number of riders of 800 per day. The bus company charges \$2.25 for a ride. They conducted a survey of their customers and found that they will lose approximately 40 customers per day for each \$.25 increase in fare. Given the description above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph you have drawn, and also the domain and range of the entire function excluding unrealistic values. Click here to see answer by rapaljer(4667)

 Question 35480: It is approximately 480 miles from Los Angeles, California to San Francisco, Allowing for various traffic conditions, a driver can average approx. 60 miles/hr. a Write a linear function that express the distance traveled, d, as a function of time, t. Click here to see answer by rapaljer(4667)

 Question 35503: Let f(x) = 2x^2 - 4x + 1 and g(x) = 3x + 2 and evaluate each of the following: g(f) f[g(0)] f[g(1)] Click here to see answer by Nate(3500)

 Question 35508: For the following problems y varies inversely with the square of x. If y is 4 when x is 5, find y when x is 2. Click here to see answer by Nate(3500)
 Question 35508: For the following problems y varies inversely with the square of x. If y is 4 when x is 5, find y when x is 2. Click here to see answer by narayaba(40)
 Question 35508: For the following problems y varies inversely with the square of x. If y is 4 when x is 5, find y when x is 2. Click here to see answer by Prithwis(166)

 Question 35507: For the following problems, y varies directly with x If y is -3 when x is 5, find y when x is -10. Click here to see answer by narayaba(40)
 Question 35507: For the following problems, y varies directly with x If y is -3 when x is 5, find y when x is -10. Click here to see answer by Nate(3500)
 Question 35507: For the following problems, y varies directly with x If y is -3 when x is 5, find y when x is -10. Click here to see answer by Prithwis(166)

 Question 35501: If f=( (2,-1),(-3,0),(4,1/2),(pie,2) ) and g = ( (2,2),(-1,4),(0,0) ) find the following: f(2) + g(2) Click here to see answer by rapaljer(4667)
 Question 35501: If f=( (2,-1),(-3,0),(4,1/2),(pie,2) ) and g = ( (2,2),(-1,4),(0,0) ) find the following: f(2) + g(2) Click here to see answer by Prithwis(166)

 Question 35505: Let f(x) = 2x + 1 and g(x) = x^2 - 4 and find the following: (fg)(x) (g of f)(x) Click here to see answer by Nate(3500)
 Question 35505: Let f(x) = 2x + 1 and g(x) = x^2 - 4 and find the following: (fg)(x) (g of f)(x) Click here to see answer by narayaba(40)
 Question 35505: Let f(x) = 2x + 1 and g(x) = x^2 - 4 and find the following: (fg)(x) (g of f)(x) Click here to see answer by rapaljer(4667)

 Question 35570: this is the problem f(x)= -x/x^2+x-6 a find the horizontal, vertical, or slant asymptotes b find the x and y intercepts c graph the function - ijust submitted another problem similiar to this but forgot to write this in for what i need to do with the function - sorry and thanks for the help - :) Click here to see answer by Earlsdon(6294)

 Question 35544: I am doing a project on Step Functions. It has been very difficult to find information about step functions and what they're used for. If possible I was wondering if you could tell me some ways step functions are used in everyday life. (Things like careers, jobs, projects, etc.) This would help me tremendously. Thanks--- Click here to see answer by rapaljer(4667)
 Question 35544: I am doing a project on Step Functions. It has been very difficult to find information about step functions and what they're used for. If possible I was wondering if you could tell me some ways step functions are used in everyday life. (Things like careers, jobs, projects, etc.) This would help me tremendously. Thanks--- Click here to see answer by Nate(3500)