Question

Elmer started out with$103 in his bank account .he spent $4 per week at the cafeteria for snacks.what is the slope (m) for this equation?

Answer 1

The equation is
`y=-4x+103`

The slope is m=-4

Explanation:

we know that

The linear equation in slope intercept form is equal to

`y=mx+b`

where

y is the amount left in the saving account

x is the number of weeks

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value

In this problem we have

The slope is equal to

`m=-\$4\ per\ week` --> is negative because is a decreasing function

The y-intercept or initial value is

`b=\$103`

substitute

`y=-4x+103`