OBJECTIVES-Write standard form for the equation of a circle.-Find the intercepts of a circle and graph.-Write the general form for the equation of a circle.-Use completing the square to change find center and radius of a circle.
Write the standard form of the equation of the circle with radius 4 and center (2, -4).
Find the general equation of the circle whose center is (-2, 3) and whose graph contains the point (1, 4).
end of day1
11
• Graph the equation.
x2 y2 10x 4y 20 0
12
• Find the center and radius. Graph and find the intercepts. # 21)2(x 3)2 2y2 8
13
• Find the center and radius. Graph and find the intercepts. # 29)2x2 2y2 12x 8y 24 0