Ellipses and Circles Practice Foci

What is the center of the ellipse?

• (0, 0)

• (1, 5)

• (1, 0)

• (0, 1)

Identify the center and the length of a and b.

• C: (0,4)  a= 25, b=4

• C: (0,0)  a= 4, b=25

• C: (0,5)  a= 2, b=5

• C: (0,0)  a= 5, b=2

Given the following, write the equation of the ellipse.

• A

• B

• C

• D

See Picture

• A

• B

• C

• D

What is the center of the shifted ellipse?

• (0,0)

• (-3,1)

• (1,-3)

• (3,-1)

What is the center of the given equation?

• (h, k) = (4, 3)

• (h, k) = (-4, -3)

• (h, k) = (-4, 3)

• (h, k) = (4, -3)

What are the vertices of the ellipse?

• (0, 0)

• (7, 1) and (-1, 1)

• (3, -5) and (3, 7)

• (3, 1)

What is the equation for the focus points on an ELLIPSE?

• c² = a² + b²

• c² = a² - b²

• 1/4d

• (x-h)² + (y-k)² = r²

In the equation (x+2)²+(y-3)²=4, the radius of the circle is...

• 4

• 2

• 3

• 16

Classify the conic section.

• Circle

• Ellipse

• Line

• None of these