Derive the equation of the parabola with a focus at (-7,5) and a directrix of y = -11. focus
1
O f(x) = +72
32
O f(x) = -(x + 7)2 – 3
32
0 102) = =
- 1 / 2 (x - 72-3
0 16x) = x-72-3
Q

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

all you have to do is multiply them both to see how many out comes you can put:

3 x 2 = 6

you can make 6 diferent combinations of crusts and toppings.

~batmans wife dun dun

answer is 17