What is the general form of a circle's equation?
Write the equation of a circle given the center and tangent to origin

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Mathematics
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(x + h)^2 + (y + k)^2 = r^2
(x - h)^2 + (y - k)^2 = r^2
x^2 - y^2 = r^2
x^2 + y^2 = r^2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean for a circle to be tangent to a point?
It passes through the point at two places.
It touches the point at exactly one place.
It intersects the point at multiple places.
It does not touch the point at all.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a circle is tangent to the origin, what can be said about its radius?
The radius is zero.
The radius is equal to the distance from the center to the origin.
The radius is half the distance from the center to the origin.
The radius is infinite.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the radius of a circle be calculated if the center is at (-4, 3) and it is tangent to the origin?
By measuring directly on a graph
Using the formula r = √(x^2 + y^2)
By guessing based on the circle's size
Using the Pythagorean theorem
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the radius of a circle with a center at (-4, 3) that is tangent to the origin?
3
4
5
6
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