Answer:
y = -2x + 1
Step-by-step explanation:
<u>Formulae:</u>
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Slope: 
- m = slope
- y₂ = second y-value
- y₁ = first y-value
- x₂ = second x-value
- x₁ = first x-value
Point-slope form: 
- y₁ = first y-value
- m = slope
- x₁ = first x-value
Slope-intercept form: 
- m = slope
- b = y-intercept value
<u>Calculations:</u>
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Okay well the starting is 28 dollars, right. But since there is a 20 percent discount, you have to turn 20% to a decimal. That means moving the decimal sign twice to the left to make it .20. From the it would be .20*28, that should equal 5.6. Now, that 5.6 is the amount you have to take away, it is the price of the sale. From then, you subtract which is 28-5.6 which should be 22.4. From that 22.4 you now take away two dollars and then it should be 22.4-2 which should be 20.4. Now that is your answer, 20.4.
I think it 3 bit I am not sure
I want an answer to this too, I would love some help as well
