To evaluate: the values for m so that the system has no solution, one solution and two solutions and justify using graph.
Answer to Problem 53E
When
When
When
Explanation of Solution
Given:
Taking the given system of equations,
Substituting ‘ y’ in the first equation,
So,
Finding for the no solution,
If the equation has no solution then it means that its discriminant should be less than 0.
It means that if the value of m is less than
Justifying it using the graph, taking m = 4,
Equation becomes,
The graph of the above equation is shown below,
It is justified that it has no solution when m = 4.
Finding for the one solution,
If the equation has one solution then it means that its discriminant should be equal to 0.
It means that if the value of m is equal to
Justifying it using the graph, taking
Equation becomes,
The graph of the above equation is shown below,
It is justified that it has one solution when
Finding for the two solutions,
If the equation has two solutions then it means that its discriminant should be greater than to 0.
It means that if the value of m is greater than
Justifying it using the graph, taking
Equation becomes,
The graph of the above equation is shown below,
It is justified that it has two solution when
Chapter 3 Solutions
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