The function ƒ(x) = is reflected across the x-axis and vertically stretched by a factor of 2. Select the correct graph for the resulting function.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

State one method by which you can recognize a perfect square trinomial.