The table defines a quadratic function

Question

What is the average rate of change between x=-1 and x=1
x|y
-1|5
0|1
1|-1
3|1
Please explain :/ by the way it already says the answer is -3 i just don't know how.

Answer 1

y goes from 5 to -1 ... a change of -6

x goes from -1 to 1 ... a change of 2

-6 / 2 = -3

Answer 2

What is the average rate of change between x=-1 and x=1

Answer 3

The average rate of change between x=-1 and x=1 of the quadratic function given in the table is -3.