Question

Is the function linear non linear X у 0 25 7 20 14 15 21 10 Non-linear Linear

Answer 1

First, we find the slope of the function

`m=(y_2-y_1)/(x_2-x_1)`

Let's replace the points (0,25) and (21,10).

`m=(10-25)/(21-0)=(-15)/(21)=-(5)/(7)`

This means the function is decreasing 5 units vertically, while it's increasing 7 units horizontally.

Hence, the function is linear.