The Graph of the Equation Is a Circle $7 x^{2}+7 y^{2}=49$

question 44

Multiple Choice

The graph of the equation is a circle. Find the center and the radius, and then graph the circle.
- $7 x^{2}+7 y^{2}=49$

• A) center \(( 0,0 )\); radius \(= 1\)
• B) center \(( 7,7 )\); radius \(= \sqrt { 7 }\)
• C) center \(( 0,0 )\); radius \(= 7\)
• D) center \(( 0,0 )\); radius \(= \sqrt { 7 }\)

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