Resources

Resources

Find properties of circles from equations in general form

Determine the discriminant for

4 x-x^{2}-2=0

__________help (numbers)

What is the center of the circle

x^2 + y^2 - 121 = 0

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Simplify any fractions.

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(\_,\_)

What is the radius of the circle

x^2 + y^2 - 64 = 0

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Simplify any fractions.

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What is the radius of the circle

x^2 + y^2 - 49 = 0

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Simplify any fractions.

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What is the center of the circle

x^2 + y^2 - 1 = 0

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Simplify any fractions.

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(\_,\_)

What is the center of the circle

x^2 + y^2 - 81 = 0

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Simplify any fractions.

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Which equation has the solution

x=4

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2 x+1=9

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9 x+8=-44

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5 x+8=83

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8 x-5=71

What is the center of the circle

x^2+y^2-144=0

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Simplify any fractions.

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(\square, \square)

What is the center of the circle

x^2+y^2-144=0

\newline

Simplify any fractions.

\newline

(\square, \square)

What is the center of the circle

x^2+y^2-144=0

\newline

Simplify any fractions.

\newline

(\square, \square)

What is the center of the circle

x^2+y^2-144=0

\newline

Simplify any fractions.

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(\square, \square)

What is the center of the circle

x^2+y^2-19y+26=0

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Simplify any fractions.

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(\square, \square)

What is the center of the circle

x^2+y^2-19y+26=0

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Simplify any fractions.

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(\square, \square)

x^{2}+y^{2}-12 x-10 y+36=0

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What is the length of the radius of the circle whose equation is shown?

A circle in the

x y

-plane has the equation

x^{2}+y^{2}-6 x-10 y=2

. What is the diameter of the circle?

A circle in the

x y

-plane has the equation

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2 x^{2}+2 y^{2}-8 x-5 y-\frac{55}{8}=0 \text {. }

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What is the diameter of the circle?

A circle in the

x y

-plane has the equation

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x^{2}+y^{2}-10 x+32 y+272=0 \text {. }

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Which of the following best describes the location of the center of the circle and the length of its radius?

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1

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(10,-32)

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4 \sqrt{17}

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(-10,32)

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4 \sqrt{17}

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(-5,16)

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3

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(5,-16)

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3

x^{2}+y^{2}-6 x+14 y=6

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What is the length of the diameter of the circle whose equation is shown?

(x+55)^{2}+(y-11.5)^{2}=121

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A circle in the

x y

-plane has the equation shown. What is the length of the diameter of the circle?

(x-17)^{2}+(y-19)^{2}=49

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A circle in the

x y

-plane has the equation shown. How long is the radius of the circle?

\left(y-\frac{4}{5}\right)^{2}+\left(x+\frac{7}{10}\right)^{2}=30

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A circle in the

x y

-plane has the equation. What is the radius of the circle? Round the answer to the nearest tenth.