
Concept explainers
Draw the graphs of each pair of linear equations on the same set of coordinate axes. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide:

To graph: The pair of linear equations:
And find the point of intersection. If line do not intersect, then tell whether the lines are parallel or coincide.
Answer to Problem 1R
Solution:
The point of intersection is
Explanation of Solution
Given Information:
The pair of linear equations:
Graph:
Consider the pair of linear equations:
To graph it first consider the equation
That is
Now plot the different ordered pairs for this equation on the graph.
For
For
For
The table for the given equation is:
Now for the equation
The value of y can be represented as
Now plot the different ordered pairs for this equation on the graph.
For
For
For
The table for the given equation is:
The graph of both the equations is:
From the graph it can be seen that both the lines will intersect at
Interpretation:
The graph shows that the point of intersection of both the equations is
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Chapter 9 Solutions
Elementary Technical Mathematics
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