Please help with this equation

Let's find the gradient (m) of the shown line ~

The formula that should be used here is ;

Consider two points (0 , 1) and (4 , 2)

So, the gradient of given line is :

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total