Answer:
Step-by-step explanation:
The vertex is halfway between focus and directrix, at (0,0).
The equation has the form y = ax².
Focal length p = distance between focus and vertex = 1
p = 1/|4a|
1 = 1/|4a|
|a| = ¼
The focus lies below the vertex, so the parabola opens downwards and a<0.
y = -¼x²
Answer:
Step-by-step explanation:
- <em>Period is the distance between two consecutive maximum points, or two consecutive minimum points.</em>
<u>On the given graph the period is the distance between maximum points -7 and 3:</u>
50 cents per page printed
The percent increase is 12.5%, 800 multiplied by 0.125 equals 100 and 100+800=900.
