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I NEED SELP ASAP PLEASEEEE 50 POINTS

I NEED SELP ASAP PLEASEEEE 50 POINTS-example-1
User Jhocking
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1 Answer

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Answer:

(x - 0)² + (y - 9)² = (√87.25)²

Explanation:

equation of circle is (x - a)² + (y - b)² = r², where a and b are centre of the circle and r is the circle's radius.

(x - 0)² + (y - 9)² = r²

x² + (y² - 18y + 81) = r²

x² + y² - 18y + 81 = r²

at the point (7.5, 5):

(7.5)² + (5)² - 18(5) + 81

= 87.25

so r² = 87.25.

in standard form:

(x - 0)² + (y - 9)² = (√87.25)²

User Achie
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