Find the center and radius

Algebra
Tutor: None Selected Time limit: 1 Day

Find the center and radius of the circle with equation (x + 6)2 + (y – 4)2 = 36.

May 16th, 2015

Finding the radius of the circle is fairly straight forward. All you do is take the square of 36 which is 6 an that is your radius. The center is determined by the constants within the parenthesis. The 6 shifts the equation left 6 units on the x axis and the - 4 shifts the equation up 4 units along the y axis. So the center makes the value on the left equal 0, so that would be (-6,4). Hope this helps. This is what it looks like if the link works. 

https://www.desmos.com/calculator/q0fjau0mqn

May 16th, 2015

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May 16th, 2015
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May 16th, 2015
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