Question

Which table (s) of data illustrate (s) a constant rate of change?

Answer 1

for a constant rate of change

find the rate of change for table 1

`r=(15-12)/(2-1)=(3)/(1)=3`
`r=(18-15)/(3-2)=(3)/(1)=3`

so table 1 has a constant rate of change.

for table 2

`r=(21-20)/(2-1)=1`

`r=(23-21)/(3-2)=2`

so table 2 has a variable rate of change.

for table 3

`r=(7-5)/(2-1)=2`

`r=(9-7)/(3-2)=2`

so table 3 has a constant rate of change.

so the correct answer is option A