Question

Which graph has a rate of change of zero? ​

Answer 1

• The first graph is : x=3

Here, the rate of change is not defined.

• The second graph : y=3

Here, the rate of change is zero .i.e., y is independent of x.

Therefore, 2nd graph has a rate of change of zero.

Answer 2

• The second (bottom) graph

Explanation:

The first line is:

• x = 3

It has undefined rate of change

The second line is:

• y = 3

It has rate of change of zero (no change in y-value for any x-value)