Question

The price of the box of 15 stickers is $6. The price of the box of 25 stickers is $8. All prices are without tax, and the price of the boxes is the same. A Write an equation which tells the price Y for the number of X stickers.

Answer 1

`y=0.2x+3`

Explanation:

Let

x ----> the number of stickers

y ----> the price of the boxes

we have the points

`A(15,6),B(25,8)`

Find the slope

`m=(8-6)/(25-15)`

`m=2/10=0.20`

Find the equation of the line into point slope form

The equation is equal to

`y-y1=m(x-x1)`

substitute the value of m and the point A

`y-6=0.2(x-15)`

`y=0.2x-3+6`

`y=0.2x+3` ----> linear equation that represent the situation