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

Equation of parabola is y = x² - 5 .

Step-by-step explanation:

Given  : parabola with a vertex at (0, -5).

To find :  which of the following equations is of a parabola.

Solution : We have given  vertex at (0, -5).

Vertex form of parabola   y = a(x - h)² + k .

Where (h ,k ) is vertex

We have h = 0 , k = -5 .

Equation : y = 1(x - 0)² - 5

y = x² - 5 .

Therefore, Equation of parabola is y = x² - 5 .

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

yes

step-by-step explanation: