
Concept explainers
a.
To make: a table of x -values and y -values for each of the given equation.
a.

Explanation of Solution
Given:
The given equation is:
Calculation:
As the first equation is
Therefore,
Now create the table so that to find the values of the equation,
Now, create the table by using the second equation so that to find the values of the equation.
The second equation is
Therefore,
Now, create the table by using the third equation so that to find the values of the equation.
The third equation is
Therefore,
Hence, the above three tables gets the result of the given system of equation.
b.
To check: whether any value represents the table intersections. Also, to find the point of intersection that satisfies both the three equation.
b.

Answer to Problem 63PPS
No point of intersection.
Explanation of Solution
Given:
The given equation is:
Calculation:
Let x be the number of roller skates and y be the number of inline skates.
From part (a), it is noticed that the one point (that is
Thus,
Hence, find the point of intersection that satisfies both the three equation.
c.
To graph: the three equation on a single coordinate plane.
c.

Explanation of Solution
Given:
The given equation is:
Calculation:
According to the question, draw the graph of the equation:
Hence, the red line represents the first equation
Chapter 3 Solutions
Algebra 2
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