Question

Graph the quadratic functions y = -2x2 and y = -2x2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs.

Answer 1

ax^2+bx+ c parabola
a is negative so it points downward
letting x =0 in first equation y = -2(0)^2= y=0, the ordered pair ( or vertex) (0,0)
2nd equation y=4 ordered pair ( or vertex) ( 0,4)