Question

Find the rate of change of the height from age 8 to 16 and from age 60 to 80. Express both answers in units of cm per year, to two significant figures. Separate your answers with a comma.

Answer 1

Complete Question

The complete question is shown on the first and second uploaded image

Answer:

a

`z = 6.25 \ cm/yr`

b

`k = -0.25 \ cm /yr`

Explanation:

From the first image the rate of rate of change of the height from age 8 to 16

is mathematically evaluated from the graph as

`z = (175 - 125)/(16-8)`

`z = 6.25 \ cm/yr`

From the first image the rate of rate of change of the height from age 60 to 80.

is mathematically evaluated from the graph as

`k = (175 - 170)/(60-80)`

`k = -0.25 \ cm /yr`