the number of free song downloads is determined using a ratio. When you purchase 40 songs, you get 24 free downloads. How many s
2 answers:
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I can show you on a piece of paper
Hope this helps *smiles*
Hope this helps *smiles*
Question:
Find the constant of proportionality k. Then write an equation for the relationship between x and y
Answer:
(a)
(b)
Step-by-step explanation:
Given
Solving (a): The constant of proportionality:
Pick any two corresponding x and y values
The constant of proportionality k is:
Solving (b): The equation
In (a), we have:
k can also be expressed as:
Substitute values for x1, y1 and k
Cross multiply:
Open bracket
Add 10 to both sides