Question

A student's saving account has a balance of $4900 on September 1. Each month the balance declines by $350. What is the slope

Answer 1

The slope is
`-(350)/(month)\`

Explanation:

This saving account is declining a fixed amount every month, this means that the function that represents this decline is linear.

The other thing we know is that originally (september 1), the account has a balance of $4900, and this is the intercept.

Therefore, for a linear function depending of the variable "x", we can write that

`f(x)= (-(350)/(month)x+4900)\`

where the units were factored. Then the slope is

`-(350)/(month)\`

Answer 2

-350 $/mo is the slope as given in the problem statement.