Which is the equation of a parabola with a directrix at y = −3 and a focus at (5, 3)?

y = one twelfth(x − 5)2
y = −one twelfth(x − 5)2
y = one twelfth(x + 5)2
y = −one twelfth(x + 5)2

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8

simple 80 pieces in 1 sercing so 80*47=3760+20=3780

so part 1: the y values stay the same, but the x values are opposite signs.

part 2 & 3: the line will be of equal lengths and will be straight.

part 4: you'd see the same characteristic because the x coordinate becomes a negative making them at equal distances from the y axis?