One equation of a pair of inconsistent linear equations is 2x – ...
If equation of a pair of inconsistent linear equations, then
For satisfying the condition of dependent linear equations, the values of a
2,b
2 and c
2 should be the multiples of the values of a
1,b
1 and c
1.
∴ the values would be
∴ the second equation can be 4x−6y = 8
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One equation of a pair of inconsistent linear equations is 2x – ...
Consistency depends upon ratio of the coefficients of variables and the constant term. If a1 /a2 =b1/b2 but not equal to c1/c2 then the equations will be inconsistent. Likewise here, we've 2/4= 3/6 but not equal to 4/9... So opt. C is correct.
One equation of a pair of inconsistent linear equations is 2x – ...
To determine the second equation in a pair of inconsistent linear equations, we need to find an equation that is not satisfied by the same values of x and y as the given equation.
Given equation: 2x - 3y = 4
We can start by simplifying this equation by isolating y:
-3y = -2x + 4
Divide both sides by -3:
y = (2/3)x - 4/3
Now let's analyze the options:
a) 6x - 9y = 12
To check if this equation is consistent with the given equation, we substitute the values of x and y from the given equation:
6x - 9y = 12
6x - 9((2/3)x - 4/3) = 12
6x - 6x + 12 = 12
12 = 12
Since the equation is satisfied, option 'a' is not the correct answer.
b) 4x - 6y = 8
Following the same process, we substitute the values of x and y from the given equation:
4x - 6y = 8
4x - 6((2/3)x - 4/3) = 8
4x - 4x + 8 = 8
8 = 8
Again, the equation is satisfied, so option 'b' is not the correct answer.
c) 4x - 6y = 9
Using the substitution method, we substitute the values of x and y from the given equation:
4x - 6y = 9
4x - 6((2/3)x - 4/3) = 9
4x - 4x + 8 = 9
8 ≠ 9
In this case, the equation is not satisfied, so option 'c' is the correct answer.
d) 3x - 2y = 4
Following the same process:
3x - 2y = 4
3x - 2((2/3)x - 4/3) = 4
3x - 2x + 8/3 = 4
x + 8/3 = 4
x = 4 - 8/3
x = 4/3
Substituting the value of x back into the given equation:
2(4/3) - 3y = 4
8/3 - 3y = 4
-3y = 4 - 8/3
-3y = 12/3 - 8/3
-3y = 4/3
y = (4/3) / -3
y = -4/9
Therefore, the equation 3x - 2y = 4 is consistent with the given equation.
In conclusion, the second equation that is inconsistent with the given equation 2x - 3y = 4 is 4x - 6y = 9 (option 'c').