To find the solution of the system of linear equation.
Answer to Problem 21E
The value of x and y is
Explanation of Solution
Given information:
The system of linear equation:
Calculation :
To evaluate the values of variables x and y ,
It is needed to substitute the relation of two variables in the second equation obtained from first equation.
Therefore the relation of two variables in the first equation is obtained as:
Now, substituting the value y in equation ( ii )
Now, substituting the value of ‘ y’ in equation ( ii ).
To check the solution of the two equation, use graphing utility to graph both the equation,
The graph is obtained as:
From the above graph, it can be observed that the point of intersection of the two line is
Hence, the solution of the two equation is
Chapter 7 Solutions
Precalculus with Limits: A Graphing Approach
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