y = ax^2
If the absolute value of a is <1 the graph is wider than when a = 1
If the absolute value of a is >1 the graph is narrow than when a = 1
The only function that fits that description is
y = 2x^2
It is the first number line :)

is equal to 2x, since it is the derivative of

.
Answer:
B
Step-by-step explanation: