Mike is saving money earned from a job. For every $20 Mike earns, he puts $4 into savings. Mike is going to graph his savings. The x-axis will be the amount earned, and the y-axis will be the money saved. What will be the slope of Mike's graphed line?

A) 5

B) 1 5

C) 5 1

D) - 5 1

The first thing we must do for this case is to define the variables:

x = the amount earned

y = the money saved

The equation of the line that adapts to this problem is given by:

y = (1/5) x

Let's check:

For x = 20 $ we have:

y = (1/5) (20)

y = 4 $

Answer:

The slope of Mike's graphed line will be:

B) 1/5