Question

Graph the quadratic functions y= -2x^2 and y= -2x^2 + 4 on a separate piece of paper. Using those graphs compare and contrast the shape and position of the graphs.

Answer 1

both are parabolic functions opening down but their vertexes are at different values on the y axis

Answer 2

Explanation:

Both are parabolas open down.

The first one has vertex as (0,0) but second parabola has vertex as (0,4)

The second parabola is nothing but a transformation of the first parabola by a shift of 4 units verticaly up.