Question

Let the function f be increasing or decreasing, but not both. State whether the function is increasing or
decreasing on the given interval and justify your answer.

Answer 1

Answer: decreasing

Explanation: As x gets bigger, y gets smaller. The two variables moving in opposite directions tell us that the function is decreasing

Another example of a decreasing function is y = -10x

Visually a decreasing curve goes downhill when moving to the right.