The focus of a parabola is (−5, −1) and the directrix is y=−3. What is an equation of the parabola? Responses (x 5)2=y 2 open parenthesis x plus 5 close parenthesis squared equals y plus 2 (x 5)2=2(y 5) open parenthesis x plus 5 close parenthesis squared equals 2 times open parenthesis y plus 5 close parenthesis (x 5)2=8(y 5) open parenthesis x plus 5 close parenthesis squared equals 8 open parenthesis y plus 5 close parenthesis (x 5)2=4(y 2)