<u>Directrix:</u>
If the vertex of the parabola is at (0, 0) and the focus is (0, -4) <em>which is 4 units down</em><em> </em>then the directrix will be the line 4 units UP.
Answer: y = 4
<u>Equation of parabola:</u>
; where p is the distance from the vertex to the focus.
As stated above, the focus is 4 units down, so p = -4
Answer: 
Each student would get 4/5 bag of popcorn
<span> if x = 2
9x + 13 = 9*2 + 13 = 18 + 13 = 31
</span><span>D) 31</span>
3,4,5,6,7.....
re-arrange : 76,534...this would be the largest 5 digit even number with the hundreds place having a 5 in it
