Quiz #1

Question 1

Circle Definition

Answer 1

The set of all points a given distance from a fixed point.

Question 2

Concentric circle

Answer 2

Same center, different radii

Question 3

Circle with center at the origin standard form

Answer 3

x^2 + y^2 = r^2

Question 4

Circle with center at (h,k) in standard form

Answer 4

(x-h)^2 + (y-k)^2 = r^2

radius is r

Question 5

Center

Answer 5

the fixed point

Question 6

Radius

Answer 6

The given distance

Question 7

Midpoint formula

Answer 7

(x1+x2 / 2 , y1+y2/2 )

Question 8

Standard form of ellipse at origin

Answer 8

(x^2 / a^2) + (y^2/b^2) = 1

“a” is always the larger number

Question 9

Standard form of ellipse at (h,k)

Answer 9

(x-h)^2/a^2 + (y-k)^2/b^2 = 1

Question 10

Horizontal Ellipse Vertices

Answer 10

(h+a,k)

h-a, k

Question 11

Horizontal Ellipse Foci

Answer 11

(h+c, k)

h-c, k

Question 12

Vertical Ellipse Vertices

Answer 12

(h, k+a)

h, k-a

Question 13

Vertical Ellipse Foci

Answer 13

(h, k+c)

h, k-c

Question 14

Horizontal vs. Vertical ellipse (a or b)

Answer 14

If the bigger number is under x (a), its a horizontal ellipse.
If the bigger # is under
y (a) its a vertical ellipse.