Question

How can you use direct variation to solve real life problems?

Answer 1

A good question

Suppose we have to pay up the parking bill at a mall

ON THE BILL BOARD IT SAYS
|________|

|

  FOR A 4  HOUR PARKING   YOU HAVE  TO PAY $3.24

|

  AND UNDER IT A LED SAYS YOU HAVE BEEN HERE FOR (5HRS)

|
|
|
|_________

now what would you do

you would use direct variation

let me make a table

let x be the cost

|

hours parked __ cost

4                                       |                      $3.24

5 | `x`

`(3.24* 5)/4 = x`

solving for `x` you will get `4.05`