What is the equation of parabola that opens right, has a vertex at origin and a vertical stretch of 1/2?

Question

anonymous · Answer

what does "vertical stretch of 1/2" mean?

anonymous · Answer

nvm can u help me with this one. Find the sum of x and y-coordinates of the vertex of the parabola given by equation 4x + 20 = (y - 7)2

anonymous · Answer

(y-7) to the power of 2

anonymous · Answer

if you write it in this form:
4a(x-h) = (y-k)^2

(h, k) is your vertex.

anonymous · Answer

so factor out that 4 on the left:
4(x + 5) = (y - 7)^2

now tell me what is (h, k) ?

anonymous · Answer

(-5,7)

anonymous · Answer

good.  that is your vertex... now you can answer the queston... :)

anonymous · Answer

what is it?

anonymous · Answer

2

anonymous · Answer

great... :)

anonymous · Answer

one more question please

anonymous · Answer

What is the equation of the axis of symmetry of the parabola y2 - 3x - 10y + 13 = 0?