Answer:
[tex]y=0.6x[/tex]
Step-by-step explanation:
If the store is offering 40 percent discount, it means that is charging 60 percent of the original price.
Let [tex]x[/tex] represent the original price of the product and [tex]y[/tex] the sale price after discount.
Since the price after discount is 60 percent of the original price, y = 60%x
Now, to convert 60% percent to decimal (and complete our model), we just need to divide it by 100%, so:
[tex]y=\frac{60}{100} x[/tex]
[tex]y=0.6x[/tex]
We can conclude that the linear model that help us find the sale price of a product is [tex]y=0.6x[/tex]
where
[tex]y[/tex] is the sale price of the product
[tex]x[/tex] is the price before discount (original price) of the product
