What is the rate of change of the function?

In this question , we have to find the rate of change that means we have to find the slope .

And for that we take two points from the graph

The points are  (0,1) , (1,-1)

TO find the slope, we have to use the following formula

Substituting the values from the points, we will get

So the rate of change is -2 and the correct option is the first option .

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3