All the functions with straight line graphs are either strictly increasing functions or strictly decreasing functions.
F

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Solution

The correct option is A F
Whenever there is a straight line function, the slope of the function is constant. Note that constant slope could be positive ,negative or zero. If the slope is positive or negative the function will be strictly increasing or strictly decreasing but if the slope is zero the function will be monotonically increasing as well as monotonically decreasing function.

So the given statement is false

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