Question

If u can't see- Use the following table to find the rate of change(just type the number or fraction)

x-20 25 5 10
y-16 18 10 12

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Answer 1

`(2)/(5)`

Explanation:

the rate of change is calculated as
`(y_(2)-y_(1) )/(x_(2)-x_(1) )`

where (x₁, y₁ ) and (x₂, y₂ ) are any 2 ordered pairs from the table

using (x₁, y₁ ) = (20, 16 ) and (x₂, y₂ ) = (10, 12 ) , then

rate of change =
`(12-16)/(10-20)` =
`(-4)/(-10)` =
`(4)/(10)` =
`(2)/(5)`