Question

Which of the following equations is of a parabola with a vertex at (0, -5)?
y= (x- 5)^2
y= (x+ 5)^2
y=x^2- 5
y=x^2+ 5

Answer 1

vertex form of quadratic function: \[y= (x-h)^{2}+k\]
h=0, k=-5

Answer 2

y=(x-0)^2-5

Answer 3

you can remove the zero.. so it will be \[y=x ^{2}-5\]

Answer 4

no perentheses

Answer 5

no