Find the standard form of the equation for the circle with the following properties.
Center
Final Answer: The standard form of the equation for the circle is
Step 1 :The standard form of the equation for a circle is
Step 2 :Given that the circle is tangent to the y-axis, the radius of the circle is equal to the x-coordinate of the center. Therefore, the radius is 9.
Step 3 :Substitute the center
Step 4 :The final equation is
Step 5 :Final Answer: The standard form of the equation for the circle is