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 = x2 - 5
y = x2 + 5

Answer 1

ok

Answer 2

c?

Answer 3

wouldnt that make it the first one then

Answer 4

sorry my equation was y=a(x-h)^2+k

Answer 5

@tylertriebs You can use -b/2a to find the x coordinate of the vertex.

Answer 6

ok

Answer 7

@tylertriebs Now solve by formula and tell me what is the result.

Answer 8

take each equation separately . @tylertriebs

Answer 9

ok just sec

Answer 10

ok im lost

Answer 11

why ?

Answer 12

i dont get how to include the equation

Answer 13

take it easy I am going to solve one equation for you.

Answer 14

Put these values in formula
-b/2a to get x coordiante .