Question

For each function choose whether it’s graph opens upward or downward.Choose the equation with the widest graph.Choose the equation with the narrowest graph.

Answer 1

a) if a > 0 the graph opens upward and if a < 0 it opens downward, hence:

up, up, up, down

b) widest: y = 2/3|x|

c) narrowest: y = 4|x|