Acircle in the xy-plane is centered at (3, 0) and has a radius with endpoint (1, 8 3 ). which answer choice is an equation of the circle?

Step-by-step explanation:

The vertex form of the equation of a circle is where (h,k) is the center of the circle and r is the radius. This circle has center (3,0). Find the radius using the distance formula with (3,0) and (1,8).

Substitute h = 3, k = 0 and r = √68 into the vertex form. Then simplify for the equation.

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

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the answer is 15% decrease