Concept explainers
(a)
Make a table for
(a)
Explanation of Solution
Given:
The equations
Concept Used:
To make a table, first choose some values of x and find the corresponding y values according to the equation.
The equations
Calculation:
Table for equation
− 2 | ||
0 | ||
− 3 |
Table for equation
− 2 | ||
0 | ||
− 6 |
Graph:
Thus, we can see in the table and the graph both that the intersection point of the graphs is
(b)
To find the value of x from the equations
(b)
Answer to Problem 41PPS
Explanation of Solution
Given:
The equations
Concept Used:
To solve the equation we can use the substitution method. Substitute
Calculation:
The equations
Substitute
Now we get the equation:
Thus, the solution of both the equation is
(c)
Explain how we get the solution of the equations
(c)
Answer to Problem 41PPS
Explanation of Solution
Given: the equations
Concept Used:
In the Part a, in the tables for the equations
In the graph also we can observe that the intersection point is
We know that according to the theory for a system of equation, the intersection of two lines is the solution of the equations.
In the part b, we have solved the equation by substitution method and got the same solution.
Thus, we can say that the solution of the equations is
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