Warm Up  What do you know about circles?. Algebra 3 Chapter 10: Quadratic Relations and Conic Sections Lesson 3: Circles.

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Presentation transcript:

Warm Up  What do you know about circles?

Algebra 3 Chapter 10: Quadratic Relations and Conic Sections Lesson 3: Circles

VOCAB  Circle – the set of all points (x,y) that are equidistant from the center  Radius – the distance between the center and any point on a circle

TODAY  Today we will learn how to graph circles algebraically

CIRCLES

Directions(Graphing)  Write the problem in standard form  Take the square root of r  Plot the 4 points on the graph  Draw your circle through the points

I DO (Graphing)

WE DO (Graphing)

YOU DO (Graphing)

REVIEW  Today you learned…

HOMEWORK  Worksheet  10.3B (1 – 6)

Warm Up  What is the standard form of a circle  What is the standard form of a parabola

Algebra 3 Chapter 10: Quadratic Relations and Conic Sections Lesson 3: Circles

TODAY  Today we will learn how to write the standard form equation of a circle when given a radius and whose center is the origin

Directions  Square the radius  Plug it into the formula

I DO (Equations with the radius)

WE DO (Equations with the radius)

YOU DO (Equations with the radius)

REVIEW  Today you learned…

HOMEWORK  Worksheet  10.3B (10 – 13)

Warm Up

Algebra 3 Chapter 10: Quadratic Relations and Conic Sections Lesson 3: Circles

TODAY  Today we will learn how to write the standard form equation of a circle when given a point on the circle and whose center is the origin

Directions  Find the distance from the point to the origin (this is your radius)  Square the radius  Plug it into the formula

I DO (Equations with the radius)

WE DO (Equations with the radius)

YOU DO (Equations with the radius)

REVIEW  Today you learned…

HOMEWORK  Worksheet  10.3B( )  10.3B (14 – 17)