Problem 127 of 7
Find the missing parameter in circle equation (x-1)^2+(y-a)^2=16 using condition center is (1,-3).
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
substitute point or use radius/center relationship.
Hidden until you reveal it.
Use the given point, center, or radius condition without introducing alternative cases.
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Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify which parameter controls center or radius.
2. Substitute the condition into the equation form.
3. Solve for the parameter.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Answers that satisfy a different circle condition.