SOLUTION: Write an equation for the parabola with focus (4,0) and directrix y=2. Thank You

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Question 43854: Write an equation for the parabola with focus (4,0) and directrix y=2.
Thank You
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
The vertex is located between this, so: V(4,1)
Remember: p+=+1%2F%284a%29
-1+=+1%2F%284a%29
-4a+=+1
-a+=+1%2F4
Use Form:
y+=+a%28x+-+h%29%5E2+%2B+k
y+=+%28-1%2F4%29%28x+-+4%29%5E2+%2B+1
y+=+%28-1%2F4%29%28x%5E2+-+8x+%2B+16%29+%2B+1
y+=+%28-1%2F4%29x%5E2+%2B+2x+-+4+%2B+1
y+=+%28-1%2F4%29x%5E2+%2B+2x+-+3
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F4%29x%5E2+%2B+2x+-+3%2C+2+%29+