
a.
To write the system of linear equations based on the information of the graph.
a.

Answer to Problem 5CYU
Explanation of Solution
Given:
Formula Used:
Equation of a line passing through two point
Calculation:
Blue Line: This line passes through the points (11, 0) and (20, 9).
Hence, the equation of the line will be:
Red Line: This line passes through (0, 46.6) and (21, 34).
Hence, the equation of the line will be:
Conclusion:
Hence, the system of equations is:
b.
To interpret the meaning of each equation
b.

Explanation of Solution
Given:
Let,
Equation (i), explains the increase of increase of total profit with increase of the number of subs.
Equation (ii), explains the decrease of increase of total number of items that can be sold with increase of the number of subs.
c.
To solve the system of equations and explain the meaning of the solution.
c.

Answer to Problem 5CYU
Explanation of Solution
Given:
Calculation:
Let,
Now, add equation (ii) with
Putting the value of y in equation (i),
Hence, for blue line, when there are 36 subs, there will be total profit of 25.
For red line, when there are 36 subs, the total items that could be sold are 25.
Conclusion:
Hence the solution is:
Chapter 6 Solutions
Algebra 1
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