Warm - ups
SWBAT write an equation of a circle
(G.12)http://www.youtube.cgvom/watch?v=OJKaNO7DD90 Circles in
Coordinate Plane (12.5) (day 5)Homework (day 5):p. 800 (2, 3, 5, 6,
7, 8, 15, 18, 20, 22, 26, 28, 32, 35, 38, 41, 42)- ck odd answers
in textPearsonsucces due Friday
Warm-Up: Power Point slide (1-13)**hw/hw log/Storybook/graph
paper/workbook p. 327Put Storybook in bucket A
Copy into your SOL binder (day 5)Answer: Center (0, 2)(-5, 2) or
(0, 7) or (5,2) or (0, -3)
Copy this into SOL binder (day 5)Answer: C
Answer: (x+3)2 + (y+1)2 = 25Copy this into SOL binder (day 5)A
circle has a center at (-1, 4) and a diameter of 20.
Select each pair of coordinates that represent a point on this
circle.
(-7, -4) (11, 20) (19, 16) (5, 12) (-9, -2) (-1, 4)
(-7,-4) (5, 12) (-9, -2)Copy into your SOL Binder (G.12)- day
5
6
p. Write the equation of the circle. is a diameter of the circle
where A(-3, 2) and B(5, 4). Write the equation of the circle. Now,
graph the circle (be precise)!
Center = Midpt of the diameter use the midpt formula (1, 3)
Radius is the distance from the center to a point on the circle.
use the distance formula
Write an equation: Center (2, -3) and radius is 5.Graph the
circle. (be precise)!
Write the equation of the circle.(x 2)2 + (y +1)2 = (8)2
Given: (x + 5)2 + (y 2)2 = 64Center (-5, 2)Radius 8
Which points lie on the circle?(-5, 10) (0, -2)(-5, -8) (0 ,
9)(-15, -5) (3, 2)
Given: (x + 2)2 + (y 3)2 = 16
Identify the centerFind the radiusPlot on point on the
circleNow, connect Points.is it a circle? Ellipse?
Classwork
Classwork
Lets Practice: Workbook p. 327 (3, 4, 10, 14, 15- be careful of
the scale, 20, 24, 28, 29)
