Circles
The RADIUS of a circle is: (Definition)
What is, the size of the circle?
The VERTEX of the parabola:
x2=2(y+4)
What is (0,-4)?
The A VALUE of a hyperbola is:
hint: pos./neg./big/small
What is ALWAYS POSITIVE?
The A VALUE of an ellipse is:
hint: pos./neg./big/small
What is ALWAYS BIGGER?
What do you call a group of friends that like algebra?
AlgeBROS!
The RADIUS of the circle:
x2+y2=25
What is 5?
The P VALUE of the parabola:
x2 = 4(y-2)
What is 2?
TRUE/FALSE:
Hyperbolas have a (+) sign between x2 and y2
What is FALSE?
The CENTER of the ellipse:
(Teacher writes on board)
What is (2,5)?
What are THE VERTEX and THE FOCUS?
The CENTER of the circle:
(x+5)2+(y-2)2=4
What is (-5,2)?
The parabola: y2 = 16(x+1) has a P VALUE of 4:
Do you CHANGE X or Y to find the FOCUS?
What is change X?
Find the A VALUE, B VALUE, and C VALUE of the hyperbola:
(Teacher writes equation on board)
What is:
a = 3
b = 2
c = square root of 13
Find the A VALUE, B VALUE, and C VALUE of the ellipse:
(Teacher writes on board)
What is
a = 3
b = 2
c = sqrt(5)
CENTER: (5,-7)
RADIUS: r=9
What is
(x-5)2+(y+7)2=81
The CENTER of the circle:
(x-6)2+y2=16
What is (6,0)?
The FOCUS of the parabola:
y2 = 16(x+1)
What is (3,0)?
The VERTICIES of the hyperbola:
(Teacher writes on board)
What is (6,2) and (0,2)?
TRUE/FALSE:
The A VALUE changes the X VALUE of the CENTER to find the FOCI if it is under the X2 VALUE
What is TRUE?
Dum Dum Suckers VS Smarties Candies
VOTE!
The RADIUS of the circle:
2x2+2y2=72
The DIRECTRIX of the parabola:
x2 = 24(y-1)
What is y = -5
(Teacher writes equation on board)
What is (3+sqrt13,2) and (3-sqrt13,2)?
(Teacher writes equation on board)
What is (2+sqrt(5), 5) and (2-sqrt(5), 5)
The 3 THINGS you need to GRAPH a HYPERBOLA:
What is
Center
B VALUE
Verticies