# Questions on Algebra: Conic sections - ellipse, parabola, hyperbola answered by real tutors!

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 Algebra: Conic sections - ellipse, parabola, hyperbola Solvers Lessons Answers archive Quiz In Depth

 Question 326965: x-intercepts for the parabola defined by the equation below. y = 3x2 + 18x + 15 Click here to see answer by stanbon(57226)

 Question 327106: A spotlight has a parabolic cross section that is 8ft wide at the opening and 3.5 ft. depp at the vertex. how far from the vertex is the focus in feet? Answer: thank you for your time! Click here to see answer by nyc_function(2733)

 Question 327530: which conic section is 6x^2/9+8y^2/12=1 Click here to see answer by Alan3354(30970)

 Question 327801: Find an equation of a parabola with focus (3,2) and directrix x = 4 Click here to see answer by galactus(183)

 Question 327856: I want to graph y=x+0 and y=x+2 in slope intercept form. Can you help me find a place where I can easily do this for a paper? Click here to see answer by Fombitz(13828)

 Question 328448: Give the slope of the asymptotes of the conic section x^2/144 + y^2/25=1 Click here to see answer by solver91311(16868)

 Question 328447: What are the coordinates of the endpoints of the major axis in the graph of x^2/25 + y^2/9=1 Click here to see answer by Fombitz(13828)

 Question 328600: What are (a)the x-intercepts,(b)the y-intercepts and (c) the foi of the following ellipse?(leave answers exact? x^2/25+y^2/36=1 Click here to see answer by Fombitz(13828)

 Question 329448: Can you show me how to get the equation of a parabola with a focus (17,9) and a directrix x=12? Click here to see answer by stanbon(57226)
 Question 329448: Can you show me how to get the equation of a parabola with a focus (17,9) and a directrix x=12? Click here to see answer by Edwin McCravy(8880)

 Question 329463: an ellispe has a foci of (-5,0) (5,0), what is the value of c^2 Click here to see answer by Fombitz(13828)

 Question 329446: What is the equation of a parabola with a focus (10,6) and directrix y=4? Please show me how you get the answer. Click here to see answer by galactus(183)

 Question 329720: Please sketch this hyperbola and show me how you did it: x^2-y^2=1. Click here to see answer by Edwin McCravy(8880)

 Question 329723: Can you please define a hyperbola, show me its equation, and send me a picture of one? Click here to see answer by Alan3354(30970)

 Question 329995: find the radius of the circle with these three point (-8,-7)(-4,-7) and (-6,-5) and the center (-6,-7) . Click here to see answer by czar222(1)

 Question 330005: Find the radius of the circle with these three points: (-4,9),(-6,5), and (3,8) and the center(-1,5) Click here to see answer by Alan3354(30970)

 Question 329976: Prove that tan x (cot x + tan x) = sec^2x Click here to see answer by mathslover(135)

 Question 329974: solve the sytem: 2x + y - z = 10 6x + 5y - 2z = 23 3x - y + z = 5 Click here to see answer by Fombitz(13828)

 Question 329973: solve the following system: 3x + 4y + x = 14 2y + 7z = 25 -2y + 3z = 5 Click here to see answer by Fombitz(13828)

 Question 329975: given the parabola has a directrix of y= -3.25 and focus (0, -2.75), find the vertex and write an equation. Click here to see answer by Fombitz(13828)

 Question 330302: graph the eclipse (x-3)^2 /4 + (y-4)^2 /25 =1 Click here to see answer by nyc_function(2733)
 Question 330302: graph the eclipse (x-3)^2 /4 + (y-4)^2 /25 =1 Click here to see answer by Alan3354(30970)

 Question 330471: Please help me solve using the principle of zero products: (9c+5)(4c-12)=0 Click here to see answer by mananth(12270)

 Question 330522: find the center of the circle with these three points (3,5),(-3,11)and (-9,5) Click here to see answer by Fombitz(13828)

 Question 331126: Write an equation of a parabola whose vertex is at (-2,1) and focus is at (-3,1). I know that h=-2 and k=1, and that there are the two formulas for a parabola with vertex (h,k): horizontal: (x-h)=m(y-k)^2 and vertical: (y-k)=m(x-h)^2 However, I do not know which formula I am supposed to use, and why. Please help and thank you! Click here to see answer by Edwin McCravy(8880)

 Question 331736: 1)if the line 3x+4y+k=0 touches the ellipse 9x2 +16y2=144 find the value of k 2)x-y=5 touches the ellipse whose foci are +-3,0 find the eq of ellipse 3)find the eq of ellipse passing through pt 2,-3 and touching the line x-2y+8=0 4)find k if y=x+k touches the ellipse 2x2 + 3y2=1 5)find the eq of tangent from -2,-1 to an ellipse 2x2 + 3y2 =6 6)prove that x+3 root y=9 is a tangent to an ellipse x2/9+y2/4=1 also find the pt of contact. i am unable to solve these problem please help me solve it.i have test in tution today.want the solutin today itself. Click here to see answer by Alan3354(30970)

 Question 331970: Write an equation for an ellipse if the endpoints of the major axis are at (1,6) and (1,-6) and the end points of the minor axis are at (5,0) and (-3,0) Click here to see answer by galactus(183)

 Question 331973: Write an equation for the hyperbola with vertices (-10, 1) and (6,1) and foci (-12, 1) and (8,1). Click here to see answer by galactus(183)

 Question 332784: What are the foci of the ellipse x^2/16+y^2/49=1? Click here to see answer by jrfrunner(365)

 Question 332879: find N of the arithmetic sequence a1=-6, aN=-23, d=-1 Click here to see answer by jrfrunner(365)

 Question 332883: find the center and radius of the equation x^2+y^2=64 Click here to see answer by solver91311(16868)

 Question 332906: what is the center of the graph of 6(x+9)^2 + 4(y-2)^2 = 49? Click here to see answer by nyc_function(2733)

 Question 332884: write the equation in standard form x^2+y^2-4x-14y+29=0 Click here to see answer by benazir.sj@gmail.com(109)

 Question 333265: Which of the following defines what a circle is? 1. a curve made by intersecting a cone with a plan 2. a curve made when the plan intersects the cone parallel with its base 3. a curve made when the plane intersects the cone parallel with its side 4. a curve made when the plane intersects the cone at some non-specific angle Click here to see answer by Alan3354(30970)

 Question 333574: What direction does the parabola y = 2(x - 1)2 - 5 open? upward, downward, right or left? Click here to see answer by unlockmath(1599)

 Question 333559: What direction does the parabola y = 2(x - 1)2 - 5 open? upward, downward, right, left? Click here to see answer by Alan3354(30970)

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