# NEED MAJOR HELP! *QUADRATIC EQUATIONS*

Write the equation for the circle with center at (- 8, - 6) and radius of 10.

(x+8)² + (y + 6)² = 10
(x+8)² + (y + 6)² = 100
(x-8)² + (y - 6)² = 100

Find the standard equation for the circle with center on the positive x-axis and passing through the origin with radius of 2.

x² + y² = 4
(x + 2)² + y² = 4
(x - 2)² + y² = 4

Choose the appropriate description for the equation.

Given: 10(x - 3)2 + 10(y + 4)2 = 100

circle
point-circle
no circle

Choose the appropriate description for the equation.

Given: (x - 2)2 + (y + 3)2 = 49

circle
point-circle
no circle

Write the equation for the circle with center at (1, - 2) and passing through the origin.

(x - 1)² + (y + 2)² = 0
(x - 1)² + (y + 2)² = 5
(x - 1)² + (y + 2)² = 25

Choose the appropriate description for the equation.

Given: x2 + y2 = 0

circle
point-circle
no circle

Write the equation for the circle with center at (6,0) and radius of 6.

(x - 6)² + y² = 36
(x + 6)² + y² = 36
(x - 6)² - y² = 36

Write the equation for the circle with center at (0,0) and radius of 4.

x² + y² = 4
x² - y² = 16
x² + y² = 16

1. 0
2. 0
3. 25

It is really easy.

if a,b is the center of a circle of radius r, then the equation is

(x-a)^2+(y-b)^2=r^2

You should memorize that.

1. 0
2. 0
posted by bobpursley
2. It probably would be easy, but I don't have a teacher teaching me this. I do all my school work online and I just need this class to finish and graduate.

1. 0
2. 0

## Similar Questions

1. ### algebra

A few more question Id like for someone to check please. 1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0 vertex (4,-5) focus (0,7) directrix y=-12 2) write an equation of a

asked by lee on February 23, 2013

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the

asked by Hannah on October 6, 2010
3. ### Math

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the

asked by Hannah on October 6, 2010
4. ### math

Write an equation of a circle with the center (-5,-4) and radius 6. The general equation for a circle is (x-a)^2 + (y-b)^2 = r^2, where r is the radius of the circle and (a,b) are the (x,y) coordinates of the center. Make the

asked by James on May 7, 2007
5. ### Geometry

Write the General form equations for the following circles: 1. A circle with center (1, -6) and radius 4 2. A circle with center (6, 8) and radius 10 3. A circle with center (0, 3) and radius 2√3 4. A circle with center (-0.5,

asked by Its me again on June 13, 2017

Write the standard form of the equation of a circle that passes through the points at (0,8) (8,0) and (16,8). Then identify the center and radius of the circle. (x-8)^2 + (y-8)^2 = 64 (x^2 / 64) + (y^2 / 64) = 64 center=(8,8)

asked by Anonymous on April 16, 2009
7. ### Algebra

Could you please check some of my Algebra problems please? Write the standard form of the equation of the circle with the given center and radius. 1. (-7,4);8 I got (x+7)^2 + (y-4)^2=64 2. (-7,10); square root of 17 I got (x+7)^2

asked by Soly on September 11, 2007
8. ### Equations of a Circle

Write the standard for of the equation of the circle that passes through the points at (0,8),(8,0),and (16,8). Then identify the center and radius of the circle. I have r=8, center=(8,8). What now?

asked by Some1 Help Me Plz on April 21, 2012
9. ### geometry

A circle with center at (2,0) and a radius of 4 is intersected by a line whose slope is 1 and whose y intercept is 2. Write the equation of the line and write the equation of the circle in standard form. i know that the

asked by Anonymous on January 3, 2011
10. ### math

Write the equation of the circle in standard form. 9x^2 + 9y^2 + 72x − 108y + 368 = 0 Identify its center and radius. center (x, y) = radius =

asked by sarah on May 19, 2018

More Similar Questions