Need some help with these.

Question

Answer 1

widest is the equation with the smallest absolute value of the squared term

in the limit y= 0x^2 + b = b, just a flat line, a degenerate form of "widest"

narrowest is the equation with the largest absolute value of the squared term

in the limit y= infinity(x) + b = infinity, no y intercept, just a vertical line

So, for 7, l-1l<l-3l<l-5l if you look at the absolute values,

for 8 l-2l<l4l<l-6l

for 9 l1/3l<l1l<l2l

for 10 l16l<l1/4l<l1/2l

11 an upward opening parabola with vertex (0,1)

12 an upward opening parabola with vertex (0,-2)

13 another upward, a little narrower vertex (0,1)

14 and 15 downward opening parabolas

16 another upward opening parabola

in each graph, the y coordinate of the vertex is the y intercept