Sadie K.

asked • 01/10/18# Four years after a tree was planted it was 8ft tall. 8 years after it was planted it was 12ft tall. What is the growth rate of the tree? how tall when planted?

Please use y=mx+b and coordinates we are doing slope in algebra one

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## 1 Expert Answer

Andy C. answered • 01/14/18

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So then the slope is M = (12-8)/(8-4) = 4/4 = 1

(4,8) --> x = 4 and y = 8

y = mx + b

8 = (1)(4) + b

8 = 4 + b

b = 4

y = 1x + 4

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Mikaila D.

Using this, we have two points. (4, 8) and (8, 12)

01/10/18