Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


The Circle

A circle is indicated when both x and y are _____? squared
What is the set of all points in a plane that are the same distance from the center? circle
What is the standard form of a circle? (x-h)^2 + (y-k)^2 = r^2
(x-h)^2 + (y-k)^2 = r^2 In this equation, what represents the center of a circle? (h,k)
What is the radius of a circle? The distance from the center of the circle to any point of the circle
Write x^2 + y^2=16 in standard form? (x-0)^2 + (y-0)^2 = 4^2
What is the radius in the equation (x-6)^2 + (y-4)^2 = 25 √25=5
Which way does the parabola open when x is squared and y is not? the parabola either opens up or opens down
In the equation x=a(y-k)^2 + h , when does the parabola open to the right? when a is greater than 0
Does the graph of the parabola given by the equation x=-6y^2 open to the left, right, upward, or downward? to the left
Created by: studymath