Over what interval is the function of the graph

1 ≤ x ≤ 6                             Option A

Step-by-step explanation:

When graph is constant it means, value of graph ( y-values)  not to be change different values of x in given interval.

In other words, graph must be parallel to the x axis is known as the constant graph.

A function is a measure of the rate of change of function values with respect to change in input values.

In given graph horizontal line is lie on the interval from x ≥ 1 to x ≤ 6.

So, option A is correct.

AB CD means you are mulitipling a number (a) by a number (b) then that mulitplied by solving C and D

Step-by-step explanation: