Pre-Algebra Examples

Graph 5y^2=25-5x^2
Step 1
Move all terms containing variables to the left side of the equation.
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Step 1.1
Add to both sides of the equation.
Step 1.2
Reorder and .
Step 2
Divide both sides of the equation by .
Step 3
This is the form of a circle. Use this form to determine the center and radius of the circle.
Step 4
Match the values in this circle to those of the standard form. The variable represents the radius of the circle, represents the x-offset from the origin, and represents the y-offset from origin.
Step 5
The center of the circle is found at .
Center:
Step 6
These values represent the important values for graphing and analyzing a circle.
Center:
Radius:
Step 7