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Three possible solutions to write an equation representing the cost of buying a certain amount of bananas based on the given cost per pound. The solutions involve determining the unit rate (k) from the table data and using it to write the equation y = kx.
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Possible Solutions
The cost of bananas per pound is represented in the table below.
Pounds of Bananas Cost ($) 2 2. 3 3. 5 6. 7 8.
Possible Solution 1
amount paid for one pound of bananas is the unit rate. This number can be determined by finding , such as or , etc.
Possible Solution 2
You can use the table to determine the slope of the line represented in the
Since all the ratios simplify to 1.25 and the cost of 0 bananas is $0, the 1.25 is the k in the equation. The cost of bananas per pound is represented in the table below. Pounds of Bananas
Cost ($)
Possible Solution 3
intercept of the graph to help write the equation for the data. The graph starts at (0, 0) and has a rate of change of $1.25 per pound.
+1. +2. 50 +2. 50