Question 38 Answer and Explanation _ACT January 2003 Form 59F Math Section

Question 38 Answer and Explanation _ACT January 2003 Form 59F Math Section

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38. In the standard (x,y) coordinate plane, the center of the circle shown below lies on the x-axis at x = 4. If the circle is tangent to the y-axis, which of the following is an equation of the circle?

F. (x + 4)² + y² = 4

G. (x - 4)² + y² = 16

H. (x - 4)² - y² = 16

J. (x - 4)² + y² = 4

K. x² + (y-4)² = 16

Answer and Explanation

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Correct Answer is G

Explanation