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# The Circle

### How to graph a circle

Question | Answer |
---|---|

What is the radius in the equation? x^2+y^2=4 | 4 |

What is the standard circle equation? | x^2+y^2=r^2 |

What is the x and y coordinate in the following equation? (x-3)^2+(y+1)^2=4 | x coordinate= 3 y coordinate=-1 |

After you find the center of the circle and plot it on the graph, how do you plot the radius? Example r=2 | Count 2 units up, down, left and right to plot and then connect the dots to make the circle. |

What is the standard equation for the circle whose center is at (10,6) and whose radius is 3? | (x-10)^2+(y-6)^2=9 |

If (h,k) are not available in the standard circle form, you can set them to: | (0,0) |

True or False. In order to find the x and y coordinates in the standard circle form, you flip the signs for (h,k): | True |

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a0735700