Question

What is the the vertex of `x = (y +2)^2 - 5`?

Answer 1

`color(blue)("vertex "-> (x,y) ->(-5,-2)`

Explanation:

This is a transformed quadratic: rotated clockwise by `pi/2->90^o`

So you swap round the x's and y's

`color(green)("If it was a standard quadratic then vertex"-> (x,y)-> (-2,-5))`

`color(brown)("But we have to swap the values round so we have:")`

`color(blue)("vertex "-> (x,y) ->(-5,-2)`