Practice problem
A parabola has a focus point at (4,32)(4,\frac32)(4,23) and a directrix of y=12y=\frac12y=21. What is the equation of the parabola?
y=(x+4)2+1y=(x+4)^2+1y=(x+4)2+1
y=12(x+4)2+1y=\frac12(x+4)^2+1y=21(x+4)2+1
y=(x−4)2+1y=(x-4)^2+1y=(x−4)2+1
y=12(x−4)2+1y=\frac12(x-4)^2+1y=21(x−4)2+1
Type a concept, like “slope” or “photosynthesis”.
