Answer: OPTION B.
Step-by-step explanation:
Given the following System of equations:
![\left \{ {{3x-5y=19} \atop {x+y=1}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B3x-5y%3D19%7D%20%5Catop%20%7Bx%2By%3D1%7D%7D%20%5Cright.)
You can use the Elimination Method to solve it. The steps are:
1. You can mutliply the second equation by -3.
2. Then you must add the equations.
3. Solve for the variable "y".
Then:
![\left \{ {{3x-5y=19} \atop {-3x-3y=-3}} \right.\\.....................\\-8y=16\\\\y=\frac{16}{-8}\\\\y=-2](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B3x-5y%3D19%7D%20%5Catop%20%7B-3x-3y%3D-3%7D%7D%20%5Cright.%5C%5C.....................%5C%5C-8y%3D16%5C%5C%5C%5Cy%3D%5Cfrac%7B16%7D%7B-8%7D%5C%5C%5C%5Cy%3D-2)
4. Now that you know the value of the variable "y", you must substitute it into any original equation.
5. The final step is to solve for "x" in order to find its value.
Then:
![x+(-2)=1\\\\x=1+2\\\\x=3](https://tex.z-dn.net/?f=x%2B%28-2%29%3D1%5C%5C%5C%5Cx%3D1%2B2%5C%5C%5C%5Cx%3D3)
Therefore, the solution is:
![(3,-2)](https://tex.z-dn.net/?f=%283%2C-2%29)
<u>He paid $ 32.10
</u>
because
07 * 30 = <u>2.10
</u>
2.10 + 30 = <u>$ 32.10</u>
Answer: The slope of the line is 2.
Step-by-step explanation:
Slope = change in y/change in x
Slope = (8-4)/(4-2)
Slope = (4)/(2)
Slope = 2
The equation of the line which is plotted on the graph and passes from the points (2,5) and (-2,-3) is y=2x-6.
<h3>What is the equation of line?</h3>
The equation of the line is the way of representation of a line in the equation form.
The equitation of the lines represents the line by the set of points on which the line lies or passes through in the coordinate system.
The formula to find equation of line is,
(y-y₁)={(y₂-y₁)/(x₂-x₁)}(x-x₁)
Here, x and y are the coordinate and subscript (1,2) used for the first and second point.
The points from which the line passes through are (2,5) and (-2,-3). Put the values,
(y-y₁)={(y₂-y₁)/(x₂-x₁)}(x-x₁)
(y-(-2))={(-3-5)/(-2-2)}(x-2)
y+2={-8/-4}(x-2)
y+2=2(x-2)
y+2=2x-4
y=2x-4-2
y=2x-6
Thus, the equation of the line which is plotted on the graph and passes from the points (2,5) and (-2,-3) is y=2x-6.
Learn more about the equation of line here;
brainly.com/question/13763238
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