is the answer A?

Consider the inequality y>a(x-h)^2, where a,h>0. No new solutions will be added to the solution set when
A. a is increased
B. a is decreased
C. h is increased
D. h is decreased

1 answer

the solution set is the area above the parabola.
Changing h just shifts the graph left or right.
So, which change to a makes the area wider?