Question

What is the vertex of y = 2|x| – 1 ?

Answer 1

the -1 moves the vertex down the y axis 1 unit from an original positiion at the vertex

Answer 2

so what would that make the equation?

Answer 3

you're not after an equation you're after the vertex

so y = 2|x| has a vertex at the origin

y = 2|x| - 1 moves the vertex down the y axis 1 unit

Answer 4

so what point would it be.... and that would be the vertex

Answer 5

(0,-1) right?