Question

Which of the following is the correct equation for the unit circle?(1 point)
Responses

(x)2+(y)2=4
left parenthesis x plus 2 right parenthesis squared plus left parenthesis y plus 3 right parenthesis squared equals 16

(x)2−(y)2=9
left parenthesis x minus 2 right parenthesis squared plus left parenthesis y minus 3 right parenthesis squared equals 4

(x)2−(y)2=4
left parenthesis x plus 2 right parenthesis squared plus left parenthesis y plus 3 right parenthesis squared equals 4

(x)2+(y)2=1

Answer 1

x^2 + y^2 = 1

This is the unit circle (center (0,0), radius 1).