Answer:
y = x + 8
Step-by-step explanation:
The following data were obtained from the question:
Cost of items (x) >>>>> Total cost (y)
$ 18 >>>>>>>>>>>>>>> $ 26
$ 35 >>>>>>>>>>>>>>> $ 43
$ 86 >>>>>>>>>>>>>>> $ 94
Let k be the relationship between the cost of the item (x) and the total cost (y).
Thus, the equation can be written as:
y = x + k
Next, we shall determine the value of k as follow:
From the table able:
Total cost (y) = $ 26
Cost of item (x) = $ 18
Relationship (K) =
y = x + k
26 = 18 + k
Collect like terms
26 – 18 = k
k = 8
Therefore, the equation is
y = x + 8
