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