Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd

Do Now:Find the roots of y = x2 + 3x

- 7?

Equation of a Circle:(x - h)2 + (y - k)2 = r2

where the center is (h,k) and the radius is r

1) What is the center and the radius of this circle?(x - 7)2 + (y + 2)2 = 36

2) What is the equation of a circle with center (5,-4) and a radius 7?

Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd

Graph the circle:(x + 3)2 + y2 = 16

Center:

Radius:

Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd

What is the equation of this circle?Center:

Radius:

Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd

Write the equation of each circle:

Center (2, 0); r = 1

Center (0, 0); r = 2

Center (-4, 1); r = 5

Find the center, radius, and graph the circle(x + 2)2 + (y + 1)2 = 9

Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd

Aim: How do we graph, recognize, and

write the equation of a circle?

MB433/16/09Lomas

HW: Read 525-526

Do 528 #11-23odd