Question

Garis singgung parabola (y-2)^2 = -12(x+1) sejajar dengan garis y-3x+1=0. Persamaan garis singgung adalah...
A. y=3x+4
B. y=3x+3
C. y=3x+2
D. y=3x+1
E. y=3x

Answer 1

(y-2)^2 = -12 (x+1)
(y-b)^2 = 4p (x-1)
b = 2, 4p = -12--> p = - 3, a = -1
gris y = 3x -1 --> m = 3
..
pers gasing y = b + m (x-a) + p/m
y = 2 + 3(x+1) + (-3/3)
y = 2 + 3x+3 -1
y = 3x + 4