Respuesta :
Answer:
The equation representing the left table is
y = 1.5x - 6
The equation representing the right table is
y = -4x + 6.1
The solution to the system of equations is
(2.2, -2.7)
A system of linear equations contains multiple linear equation
- The equation of the left table is [tex]y =1.5x -6[/tex]
- The equation of the right table is [tex]y =-4x +6.1[/tex].
- The solution to the system of equations is (2.2,-2.7)
The left table
The slope is calculated as:
[tex]m = \frac{y_2 -y_1}{x_2 -x_1}[/tex]
Using the points on the table, we have:
[tex]m = \frac{-4.5 --6}{1-0}[/tex]
[tex]m = \frac{1.5}{1}[/tex]
[tex]m = 1.5[/tex]
So, the equation is calculated using
[tex]y =m(x -x_1) + y_1[/tex]
This gives
[tex]y =1.5(x -0) -6[/tex]
Open bracket
[tex]y =1.5x -6[/tex]
The right table
The slope is calculated as:
[tex]m = \frac{y_2 -y_1}{x_2 -x_1}[/tex]
Using the points on the table, we have:
[tex]m = \frac{2.1 -6.1}{1-0}[/tex]
[tex]m = \frac{-4}{1}[/tex]
[tex]m = -4[/tex]
So, the equation is calculated using
[tex]y =m(x -x_1) + y_1[/tex]
This gives
[tex]y =-4(x -0) +6.1[/tex]
Open bracket
[tex]y =-4x +6.1[/tex]
The solution
We have:
[tex]y =1.5x -6[/tex]
[tex]y =-4x +6.1[/tex]
Equate both equations as follows
[tex]-4x + 6.1 = 1.5x - 6[/tex]
Collect like terms
[tex]-4x -1.5x = -6.1 - 6[/tex]
[tex]-5.5x = -12.1[/tex]
Divide both sides by -5.5
[tex]x = 2.2[/tex]
Substitute 2.2 for x in [tex]y =1.5x -6[/tex]
[tex]y =1.5 \times 2.2 -6[/tex]
[tex]y =-2.7[/tex]
Hence, the solution to the system of equations is (2.2,-2.7)
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