Question
Question: Equation of the parabola with its vertex at (1,1) and focus (3, 1) is...
Equation of the parabola with its vertex at (1,1) and focus
(3, 1) is
A
(x – 1)2= 8(y – 1)
B
(y – 1)2 = 8(x – 3)
C
(y – 1)2 = 8(x – 1)
D
(x – 3)2 = 8(y – 1)
Answer
(x – 1)2= 8(y – 1)
Explanation
Solution
x2 = 4ay
(x – 1)2 = 4(2) (4 – 1)
(x – 1)2 = 8(y – 1)