1. Objective- To write and graph linear equations to describe given situations.
Beth begins with $10 in the bank and
saves $5 each week. Write a linear
equation for this situation and graph. w t
Let w = the number of weeks 10
Let t = the amount of money saved 1 15 2 20
t = w 3 25 4 30 5 35

2. t = 10 + 5w Let w = the number of weeks
Let t = the amount of money saved
t = w w t 10 40 35 30 25 20 15 10 5 1 15 2 20 3 25
Savings 4 30 5 35
Weeks

3. A flooded stream is now 14 inches above normal
A flooded stream is now 14 inches above normal. If the water level drops 2 inches per hour, write a linear equation for this situation and graph. x y 14
Let x = the number of hours 1 12
Let y = the height of the water 2 10 3 8 4 6
y = x 5 4 6 2

4. y = 14 - 2x Let x = the number of hours Let y= the height of the water14 18 16 14 12 10 8 6 4 2 1 12 2 10 3 8 4 6
Height 5 4 6 2
Hours