Question 1

When  the center of the circle is at the origin what is the standard equation?

Accepted Answer

x^2 + y^2 = r^2

Answer

x^2 - y^2 = r

Answer

x^2 + y^2 = 1

Answer

x + y = 1

Question 2

What do you call the equation y = mx+b

Accepted Answer

Equation of the line

Answer

general equation of circle

Answer

midpoint formula

Answer

standard equation of circle

Question 3

They are circles with a common center.

Accepted Answer

concentric circles

Answer

point circle

Answer

middle circles

Answer

center circles

Question 4

It is considered a special kind of ellipse that is when the plane is tilted horizontally

Accepted Answer

circle

Answer

hyperbola

Answer

circular

Answer

parabola

Question 5

When the canter of the circle is not at the origin, what is the standard equation of the circle?

Accepted Answer

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

Answer

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

Answer

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

Answer

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

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