Problema 1
Find the focus and directrix of each parabola with the given equation. Then match each equation to one of the graphs that are shown and labeled (a)–(d).
a.
b.
c.
d.
y2 = 4x
Problema 5
Find the focus and directrix of the parabola with the given equation. Then graph the parabola.
Problema 7
Find the focus and directrix of the parabola with the given equation. Then graph the parabola. y2 = - 8x
Problema 9
Find the focus and directrix of the parabola with the given equation. Then graph the parabola. x2 = 12y
Problema 11
Find the focus and directrix of the parabola with the given equation. Then graph the parabola. x2 = - 16y
Problema 13
Find the focus and directrix of the parabola with the given equation. Then graph the parabola. y2 - 6x = 0
Problema 15
Find the focus and directrix of the parabola with the given equation. Then graph the parabola. 8x2 + 4y = 0
Problema 17
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (7, 0); Directrix: x = - 7
Problema 19
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (- 5, 0); Directrix: x = 5
Problema 21
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (0, 15); Directrix: y = - 15
Problema 23
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (0, - 25); Directrix: y = 25
Problema 25
Find the standard form of the equation of each parabola satisfying the given conditions. Vertex: (2, - 3); Focus: (2, - 5)
Problema 27
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (3, 2); Directrix: x = - 1
Problema 29
Find the standard form of the equation of each parabola satisfying the given conditions. Focus: (- 3, 4); Directrix: y = 2
Problema 31
Find the vertex, focus, and directrix of each parabola with the given equation. Then match each equation to one of the graphs that are shown and labeled (a)–(d). (y - 1)2 = 4(x - 1)
a.
b.
c.
d.
Problema 33
Find the vertex, focus, and directrix of each parabola with the given equation. Then match each equation to one of the graphs that are shown and labeled (a)–(d). (x + 1)2 = - 4(y + 1)
a.
b.
c.
d.
Problema 35
Find the vertex, focus, and directrix of each parabola with the given equation. Then graph the parabola. (x - 2)2 = 8(y - 1)
Problema 37
Find the vertex, focus, and directrix of each parabola with the given equation. Then graph the parabola. (x + 1)2 = - 8(y + 1)
Problema 39
Find the vertex, focus, and directrix of each parabola with the given equation. Then graph the parabola. (y + 3)2 = 12(x + 1)
Problema 41
Find the vertex, focus, and directrix of each parabola with the given equation. Then graph the parabola. (y + 1)2 = - 8x
Problema 43
Convert each equation to standard form by completing the square on x or y. Then find the vertex, focus, and directrix of the parabola. Finally, graph the parabola. x2 - 2x - 4y + 9 =0
Problema 45
Convert each equation to standard form by completing the square on x or y. Then find the vertex, focus, and directrix of the parabola. Finally, graph the parabola. y2 - 2y + 12x - 35 = 0
Problema 47
Convert each equation to standard form by completing the square on x or y. Then find the vertex, focus, and directrix of the parabola. Finally, graph the parabola. x2 + 6x - 4y + 1 = 0
Problema 49
Identify each equation without completing the square. y2 - 4x + 2y + 21 = 0
Problema 51
Identify each equation without completing the square. 4x2 - 9y2 - 8x - 36y - 68 = 0
Problema 55
Identify each equation without completing the square. 100x2 - 7y2 + 90y - 368 = 0
Problema 57
Use the vertex and the direction in which the parabola opens to determine the relation's domain and range. Is the relation a function? y2 + 6y - x + 5 = 0
Problema 67
Find the solution set for each system by graphing both of the system's equations in the same rectangular coordinate system and finding points of intersection. Check all solutions in both equations.
Problema 1
Graph the ellipse and locate the foci.
Ch. 7 - Conic Sections
