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Write the standard form equation of a circle using the information provided:

ends of a diameter: (-7,-6) and (-3,2)

User Rollin
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1 Answer

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Answer: the standard form equation of the circle is:

(x + 5/2)^2 + (y + 1)^2 = 181/4

Step-by-step explanation: In order to find the standard form equation of a circle, we need the center and the radius. First, calculate the midpoint of the diameter, which is the center:

Midpoint = ((-7 - 3) / 2, (-6 + 2) / 2)

Midpoint = (-5/2, -1)

Now, calculate the radius, which is the distance from one of the diameter's endpoints to the center:

Radius = √((-7 - (-5/2))^2 + (-6 - (-1))^2)

Radius = √((-14/2 + 5/2)^2 + (-5)^2)

Radius = √((-9/2)^2 + 25)

Radius = √(81/4 + 25)

Radius = √(181/4)

Now, plug the center and radius into the standard form equation of a circle:

(x - (-5/2))^2 + (y - (-1))^2 = (√(181/4))^2

Simplify:

(x + 5/2)^2 + (y + 1)^2 = 181/4

User Daniel Ellis
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