Can anyone help me and also provide the working?

What two criteria are needed for triangles to be similar

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.