Section 1.9 Flashcards
1
Q
What is the distance formula?
A
d=square root(x2-x1)^2+(y2-y1)^2
2
Q
What is the midpoint formula?
A
(x1+x2/2, y1+ y2/2)
3
Q
Standard form of a circle equation:
A
(x-h)^2 + (y-k)^2=r^2
4
Q
The center of a circle coordinates are…. but not….
A
h,k not -h,-k.
5
Q
When expressing the domain of a circle you use open or closed brackets?
A
Closed.
6
Q
General form of the equation of a circle
A
x^2 + y^2 + Dx + Ey + F = 0
7
Q
How do you convert the general form of a circle to standard form?
A
You complete the square on x and y.
