Rose Harrison and Clara Huizink Solutions for Exercise 13: Practice 3

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=(x-3{)}^2+1$.

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=-(x-4{)}^2-3$.

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=2(x+1{)}^2-1$.

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=-3(x+2{)}^2+1$.

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=-x^2+2$.

State the coordinates of the vertex of the following quadratic function and determine if the quadratic is concave up or concave down.

$y=3x^2-1$.

A quadratic function with leading coefficient $2$ has a repeated zero at $x=-3$. Write the function in vertex form.