Graph an Equation of a Circle

Open Ended

​ 1. (3/7) + (2/5) =

2. (6/5) - (1/3) =

3. ​(1/5) * (3/2) =

4. (2/5) / (1/2) = ​

​Direction: Add/subtract/multiply or divide the fractions.

Graph an Equation of a Circle

By JadeAnthony Dosdos

​Recap / Review:

​Examples:

​1. Center : (0, 0) with a radius of 2.

​1. Center: (3, -1) with a radius of 4.

Open Ended

Write the standard of an equation of a circle whose center is (0,0) with the radius of 5.

Open Ended

Write the standard of an equation whose center (-1, -1) with a radius of 3.

​Steps on how to graph a circle.

​ 1. Locate the CENTER of the circle by plotting the coordinates.

2. ​Calculate the radius and set into r-squared to find the radius.

3. ​Plot the radius point in the coordinate plane. Count out in every direction from the center. (left, right, up and down.)

4. ​Connect the dots to graph the circle.

​Example:

​1. Center: (0,0) with a radius of 2.

​Example:

​1. Center: (3, -1) with a radius of 4.

​Example:

​1. Graph the equation x² + (y-2)² = 16.

​Your turn!!

​I will give you graphing paper and solve one example on the board.

​1. Center: (-2, 5) with a radius of 3.

Graph the equation (x+1)² + (y-3)² = 4.

Poll

Any questions?

• Yes

• N