Write the standard form equation of a circle.
(x-h)2 + (y-k)2 = r2
Identify the conic section:
-x2 + 16y2 + 96y +128 = 0
Hyperbola
Given the equation (x-1)2 + (y+4)2 = 18, identify the radius and center.
Center: (1,-4)
Radius: 4.24
In a parabola, what does (h, k) give?
The vertex.
Convert into standard form and identify the conic section. 4x2 + 9y2 = 36
Ellipse. 4x2 / 36+ 9y2 / 36= 1
(x-3)2 + (y+2)2 = 25
Write the equation of a parabola with vertex at (2, 3) that opens upwards and has a focal length of 4.
(x-2)2 =16(y-3)
How do you recognize the transverse axis from the standard form of a hyperbola?
Write the standard form of an ellipse and hyperbola. Clearly label each one.
Ellipse:
((x-h)2 / a2 )+((y-k)2 / b2)= 1
Hyperbola:
((x-h)2 / a2 )-((y-k)2 / b2)= 1
Give the definition of a major and minor axis.
The major axis is the longest axis of symmetry in an ellipse and the minor is the shortest axis of symmetry.
Minor Axis
For the following:
y = 8(x-1)2 + 4
identify the vertex and the direction of opening.
Vertex: (1,4) and opens vertically (upwards).
Vertices
How do you know if an ellipse is horizontal or vertical?
The larger denominator is under the x variable if the ellipse is horizontal. The larger denominator is under the y variable if the ellipse is vertical.
Convert the following to standard form and identify the conic section.
x2+y2−6x−8y+9=0
Circle. (x-3)2+(y-4)2 = 16
Given:
((y-6)2 / 16)- ((x+4)2 / 25) = 1
Identify the center, vertices, and foci of the hyperbola.
FINISH THIS LATER
What is the general form of the ellipse with center at the origin, a major axis of length 10, and a minor axis of length 6?
9x2 + 25y2 = 225
Given that an ellipse has foci at (7, 0) and (-7,0) and the endpoints of the minor axis are (0,5) and (0, -5), write the equation of the ellipse in standard form.
FINISH THIS LATER
Given the following:
The major axis is horizontal, with a center at (0,0), a major axis that is 12 units long, and a minor axis that is 4 units long, write the standard form equation of the ellipse.
((x2) / 36) + ((y2) / 4) = 1