College of Admission Tests Multan

Graphing Functions

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 2

What is the center and radius of the circle indicated by the equation?

( x 2 ) 2 + y 2 = 36

  • ( 2 , 0 ) ,   r = 36
  • ( 2 , 0 ) ,   r = 6
  • ( 2 , 0 ) ,   r = 6
  • ( 2 , 0 ) ,   r = 36

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Correct Answer: C

A circle is defined by an equation in the format ( x h ) 2 + ( y k ) 2 = r 2

The center is indicated by the point (h, k) and the radius r.

In the equation ( x 2 ) 2 + ( y ) 2 = 36 = 6 2 , the center is (2,0) and the radius is 6.