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Equations of Circles

Authored by Ciara Redfearn

Mathematics

12th Grade

CCSS covered

Used 12+ times

Equations of Circles
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the standard form of the equation of a circle?

(x + h)^2 - (y + k)^2 = r^2

(x - h)^2 + (y - k)^2 = r^2

(x - h)^2 - (y - k)^2 = r^2

(x + h)^2 + (y + k)^2 = r^2

Tags

CCSS.HSG.GPE.A.1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you find the center and radius of a circle given its equation in standard form?

Complete the square to rewrite the equation in the form (x - h)^2 + (y - k)^2 = r^2

Guess the center and radius based on the coefficients of the equation

Graph the equation and measure the center and radius using a ruler

Use the quadratic formula to solve for the center and radius

Tags

CCSS.HSG.GPE.A.1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the equation of a circle is given as (x-3)^2 + (y+4)^2 = 25, what is the center and radius of the circle?

(5, -3) and 7

(3, -4) and 5

(0, 0) and 10

(2, 4) and 6

Tags

CCSS.HSG.GPE.A.1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Write the equation of a circle with center (2, -5) and radius 7.

(x - 2)^2 + (y - 5)^2 = 49

(x - 2)^2 + (y + 5)^2 = 49

(x - 2)^2 + (y + 5)^2 = 64

(x + 2)^2 + (y - 5)^2 = 49

Tags

CCSS.HSG.GPE.A.1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation of a circle with center (0, 0) and radius 6?

x^2 + y^2 = 36

2x + 2y = 36

x^2 + 6y = 0

x^2 - y^2 = 36

Tags

CCSS.HSG.GPE.A.1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the equation of a circle is given as (x+1)^2 + (y-2)^2 = 36, what is the center and radius of the circle?

(1, -2) and 36

(-1, 2) and 12

(-2, 1) and 6

(-1, 2) and 6

Tags

CCSS.HSG.GPE.A.1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you write the equation of a circle given its center and radius?

(x + h)^2 + (y + k)^2 = r^2

(x - h)^2 - (y - k)^2 = r^2

(x + h)^2 - (y + k)^2 = r^2

(x - h)^2 + (y - k)^2 = r^2

Tags

CCSS.HSG.GPE.A.1

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