SAT Math Practice Question #20427 - SATify | SATify
#20427
coordinate geometry
circles
hard
180 sec
Calculator OK
A circle in the xy-plane has a diameter with endpoints (−1,−2) and (5,6). An equation of this circle is (x−2)2+(y−k)2=r2, where k and r are positive constants. What is the value of k?
• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-). • Fractions must be in lowest terms. • Mixed numbers must be converted to improper fractions.
