Parabola
sumbu simetri y = q dan titik puncak (p, q)
(y - q)² = a( x - p)
*
Sumbu simetri y = - 1 dan puncak (3, -1)
(y + 1)2 = a (x -3)
melalui (5,9) , x = 5 , y = 9 sub ke (y + 1)2 = a (x -3)
100 = a(2)
a= 50
persamaan parabola
(y+1)² = 50 (x – 3)
atau
y² - 50 x + 2y + 151 = 0
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Verified answer
Parabola
sumbu simetri y = q dan titik puncak (p, q)
(y - q)² = a( x - p)
*
Sumbu simetri y = - 1 dan puncak (3, -1)
(y + 1)2 = a (x -3)
melalui (5,9) , x = 5 , y = 9 sub ke (y + 1)2 = a (x -3)
100 = a(2)
a= 50
persamaan parabola
(y+1)² = 50 (x – 3)
atau
y² - 50 x + 2y + 151 = 0