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Tutors Answer Your Questions about Quadratic-relations-and-conic-sections (FREE)
Question 123500: My question is "Use the definition of a parabola and the distance formula to find the equation of a parabola with directix y=2 and focus (-3,6)"
Please help! Also looking for a possible online math tutor. Please e-mail me with information, Thanks!
Click here to see answer by scott8148(3382)   |
Question 124687: The problem is:
Sketch a graph of this equation, find the coordinates of the foci, and find the lengths of the major and minor axes.
3x^2+2y^2=24
I know it may be hard to show how to graph this, so just putting it into the correct form of an ellipse, and then helping me figure out what the foci and axes are would be very helpful! Thanks :)!!
Click here to see answer by Edwin McCravy(2922)  |
Question 125362: I cant find a good example of how to graph a porabola in x-itercept and y-intercept form. Can you explain these to things better to me in note form pleas. It would really help me out in my math class. Thank you.
Click here to see answer by stanbon(26274) |
Question 126420This question is from textbook 
: i really need help with this problem i tried it but it didnt work out. it says an ellipse with center at the origin and horizontal major axis is to fit snugly inside a rectangle that has its longer sides horizontal. the area of the rectangle is 12 square units, and the perimeter is 14 units. find an equation for the ellipse. This question is from textbook
Click here to see answer by stanbon(26274) |
Question 126660: **Sorry if this appears twice, it doesn't seem to have worked the first time.
A hyperbola with the transverse axis on the line y=-5, length of transverse axis = 6, conjugate axis on the line x = 2, and length of conjugate axis = 6.
I need to use this information and put this hyperbola into an equation in the Ax2+By^2+cxy+Dx+Ey+F=0
So far, I know that the center is at (2,-5) and both a and b = 3. (at least I think)
I am really having problems putting it into the form that they ask. Help would be greatly appreciated!!
Click here to see answer by solver91311(5072)  |
Question 126987: The monthly sales of socks,(S on thousands of pairs) , can be calcualted by S=-t(squared)+4t+40 where t is t=0 corresponds to the first month of sales (t in months) In which months were there:
A)When were the maximum number of socks sold? For this one I used -b/2a to find the vertex and I came up with 2 months.
B) What is the maximum number of socks sold? I'm thinking you would just double the first answer and get 4 months.
C)When is the number of pairs sold equal to zero? Probably either 4 or 8 months. I think this because either I was wrong with 'B' and the maximum number was in month 2 or I was right and you just double 4.
Thanks for any help!
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 130120: ok so my question is how can you still use the "answer" you get from the Quadratic formula to find the vertex? And this is what i did...
Problem: y= x^2-4x+6
i used the quadratic formula...
x= 4(+or-)  / 2(1)
and got x= 2 - 1.415i and x= 2 + 1.415i
how can i use those conjugate pairs to find the vertex?
Click here to see answer by jim_thompson5910(13794) |
Question 131501: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function.
f(x) = -2x^2+2x+4
The x-Coordinate of the vertex is:
The y-coordinate of the vertex is:
The equation of the line of symmetry is x =
The maximum/minimum of f(x) is
The value, f(1/2) = 17/2 is the minimum or maximum?
Click here to see answer by solver91311(5072) |
Question 131498: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function.
f(x)=3x^2-12x+6
Thank you. I have the most difficulty in finding the vertex, once the equation is set up, it's much easier for me to go from there.
Click here to see answer by solver91311(5072) |
Question 133047: how can you tell if the equation is a circle, an ellipse, parabola or hyperbola with out graphing or putting it in standard form?
for example:
x^2 + 4x + y^2 +4y - 8 = 0 is a circle,
but how do you tell w/o putting it in standard form?
please help differ all shapes.
Click here to see answer by stanbon(26274) |
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