SOLUTION: 1.The equation of the parabola whose focus is at (-3, 0) and directrix x = 3 is: 2.The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is: 3.The e

Question 477604: 1.The equation of the parabola whose focus is at (-3, 0) and directrix x = 3 is:
2.The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:
3.The equation of the parabola whose focus is at (7, 0) and directrix at x = -7 is:
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
1.The equation of the parabola whose focus is at (-3, 0) and directrix x = 3 is:
2.The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:
3.The equation of the parabola whose focus is at (7, 0) and directrix at x = -7 is:
**
1. Parabola opens leftwards.
Axis of symmetry: y=0 or x-axis
Vertex=(0,0)
p=distance from vertex to focus or to directrix on the axis of symmetry=3
Equation:
y^2=-4px
y^2=-12x
..
2. Parabola open upwards.
Axis of symmetry: x=0 or y-axis
Vertex=(0,0)
p=distance from vertex to focus or to directrix on the axis of symmetry=5
Equation:
x^2=4py
x^2=20y
..
3.Parabola opens rightwards.
Axis of symmetry: y=0 or x-axis
Vertex=(0,0)
p=distance from vertex to focus or to directrix on the axis of symmetry=7
Equation:
y^2=4px
y^2=28x
RELATED QUESTIONS
find the general equation of the parabola whose focus is (2,3) and directrix is... (answered by josgarithmetic)

Find the equation of the parabola whose focus is (-3, 2) and directrix is x+y =... (answered by Edwin McCravy)

Write the equation of the parabola that has its focus at the point (4,7) and whose... (answered by Edwin McCravy)

Find the equation of the parabola whose focus is (2,3) and directrix is... (answered by Edwin McCravy)

The equation of the parabola whose focus is at (0, 5) and directrix at y = -5... (answered by Theo)

Find the equation of the parabola whose focus is (-1,2)and directrix is x-2y-15=0. (answered by josgarithmetic)

Write the standard form of the equation of the parabola whose directrix is x=-4 and whose (answered by josgarithmetic)

What are the focus and directrix of the parabola with the equation y = 1/12x2? focus: (answered by MathLover1)

Find the equation of parabola whose focus is (-8, -2) and equation of directrix is y =... (answered by Edwin McCravy)