Activity 2: Planting Trees The best time to plant trees was 20 years ago
The second best time is NOW
Data from the lumber industry shows that the
older the tree (a), the greater the number of board feet
(n) that can be created from the tree. For a tree that is
160 years old, 18,200 board feet can be used
a) Write an equation in slope-intercept form to represent this situation
b) What does the independent variable represent?
c) What does the dependent variable represent?
d) How much board feet can be used from a tree that is 100 years old?
e) If 6,825 board feet was used from a tree, how old was the tree?

pleas answer thi kailangan ko na toh​

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

its a straight line parallel to the time axis

step-by-step explanation:

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