The equation representing pizza purchase and delivery in point slope form is y = 2x + 1 and the delivery fee is $1
The total cost of pizza including delivery can be broken down thus :
General form of a point slope equation :
From the question :
Putting the values into the equation :
9 = 4(2) + a
Solve for a
9 = 8 + a
9 - 8 = a
a = 1
This means that delivery fee is $1
The equation in point slope form is thus : y = 2x + 1
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