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
0 1 2 3 4 5
t 10 15 20 25 30 35
Let w = the number of weeks Let t = the amount of money saved
t = 10 + 5w
Let w = the number of weeks Let t = the amount of money saved w 0 1 2 3 4 5 t 10 15 20 25 30 35
t = 10 + 5w
40 35 30 25 20 15 10 5 0
Savings
0 1 2 3 4 5 6 Weeks
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 0 1 2 3 4 5 6
y 14 12 10 8 6 4 2
Let x = the number of hours Let y = the height of the water
y = 14 - 2x
Let x = the number of hours Let y= the height of the water x 0 1 2 3 4 5 6 y 14 12 10 8 6 4 2
y = 14 - 2x
18 16 14 12 10 8 6 4 2 0
Height
0 1
2 3 4 Hours
5