WebGraphing.com Forum (Forum: Algebra, Pre-Algebra, and Basic Math Homework Help)

Requesting help with parameters

Mon, 23 Aug 2010 20:08:40 -0400

Greetings to the group. This is my first post. I would like to be able to adjust the view window of a graph so that I can see the intersection of two equations. The results I get are a virtually flat line from the origin to the right margin. Thanks for any discussion or help. I have a problem in compound interest that I would like to graph to include with a paper I am writing using MS Word ...

problem finding the distance between P and Q

Mon, 09 Aug 2010 21:30:01 -0400

P(6,-3), Q(-3,2) the neg. signs messes me up!

Absolute Value Functions

Wed, 07 Jul 2010 18:09:15 -0400

Where can i find a topic on Absolute Value Functions on this site?

help determing a function

Sat, 05 Jun 2010 21:21:27 -0400

I need help on how to determine which of the following three are functions f(x) = x + 3 f(x) = 73 if x>2 otherwise f(x) = -1 f(x) = 79if x>0 or f(x) = -9 if x<0 or f(x) = 9 or -9 if x = 0

please help with equation of a line

Fri, 28 May 2010 03:57:12 -0400

write a equation of a line containting the given point and a parallel to a given line (4,-1) 2x-5y=8 the equation of a line is y= write it in the form of y=mx+b i know that m would be 2/5 but when i do y-y=2/5(x-x) that is were is get messed up can some one explain this?

I need help please :)

Sun, 23 May 2010 23:16:44 -0400

I am new to this site and i hope i am posting this in the right place... My problem is the following: During a 3000 mile flight, a plane encounters a strong tail wind that increased it's speed by 100mi/h. This increase in speed shortened the flying time by one(1) hour. Find the speed of the plane relative to the ground. I feel pretty stupid not being able to answer this... :( Thanks

graphing non linear systems

Wed, 05 May 2010 02:02:47 -0400

I need help graphing this linear systems. x^2+y^2=4 x+y=4

finding the slope - rise over run

Sun, 21 Mar 2010 21:33:16 -0400

Hello, I was wondering what calculator would be best suited to help find the solutions for finding the slope. Two points are given lets say (0,5) (4,2) yes the formula is m=[u]Y2-Y1[/u] X2-X1 But is there a way for me to plug in the points or the formula and out comes the answer 1/3?

Rational functions

Sun, 21 Mar 2010 02:23:35 -0400

I would like to check my answers. I'm working on rational functions. What graph would I use? I need vertical asymptotes and horizontal asymptotes. When I use basic calculator i get a message that says that polynomials do not have asymptotes. Thanks

Exponential Equation

Fri, 19 Mar 2010 18:13:37 -0400

I need help in evaluating the exponential equation for 3 positive values of x, 3 negative values of x, & at x = 0.Then use the resulting ordered pairs to plot a graph and state the equation of the line asymptotic to the graph (if any): y = 5^x + 3

Graphing Hyperbolas

Wed, 03 Mar 2010 01:53:32 -0500

Ok so I'm in algebra and we're graphing hyperbolas and I was wondering if anyone knows how to or if the computer can make a box that connects the assymptotes and foci.

exponetial decay

Sun, 21 Feb 2010 23:33:22 -0500

you buy a new computer for $2300. The value of the computer decreases by about 45% annually. Write an exponential decay model for the value of the computer and use the model to estimate the value after 2 years

Domain/Range=Function

Mon, 01 Feb 2010 03:40:34 -0500

Where do I go to find the domain and range of a function in this site?

Solve for X

Sat, 05 Dec 2009 21:43:40 -0500

Solve for X: 2/x+1 + 3/x+2=1/4

Graphing an exponential function

Sun, 06 Dec 2009 08:12:42 -0500

-1/2(y-2)=2^-(x-1) I still am not sure how to graph properly, I tried using the graphing calculator on this site and others. I just am not sure what first steps I should take. Like I said earlier, I can find the Horizontal translation, vertical translation, vertical stretch and I know the function is decreasing. But I still can't figure out how to graph it and find domain, range, asymptotes ...