a) Too graph this equation you would first need to form an equation in either slope intercept, standard, or point slope form. If the y-axis represents the height of the tree and the x-axis represents the time passed then the equation would be y = 3x + 2. So on day 0 if you plug in 0 for the time (x) then y would be 2. So that fits since on the first day it was 2 feet tall. As for the graph keep on plugging values into the equation (y = 3x+2). Start at 0 as your first pluggin then go to 1 then to 2 then 3 and so on until you think the graph looks sufficient. The first four points would be (0,2) , (1,5) , (2,8) , (3,11)

b) Just substitue the value 6 in the equation above for y since y is height and x is time.

6 = 3x + 2 3x = 4 x = 4/3 or 1 day and a third

c) The domain is the input day 0 would be the first part of the domain and there is infinite time or until the tree dies, but in math we say infinite. domain is 0 as lower and infinite as higher. Range would be be from 2 to infinte since on day 0 the tree is 2 feet tall and going in infinite time you would have infinite height.

B. To do this, just put 72 (six feet converted into inches) as y in the equation. So, 72 = 3x + 14 . Then solve.

C. The domain is all possible x values and the range is all possible y values. Since what you are measuring is time and height, there will be no negative values. You write the domain as (minimum amount of time) < x < (maximum amount of time) , and the range similarly, but with height.