Answer:
Look at the attachment
How do you complete the square in a quadratic equation?
1 answer:
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The system of the equation doesn't give the solution at (-3, -6).
<h2>Given to us</h2>- -4x+y = 6
- 5x-y =21
-4x+y = 6
solve for y
5x-y =21
substitute the value of y in equation 2,
Substitute the value of x in equation 2,
We can see that the solution of the two equations is at (27, 114). Also, it can be verified by plotting the line on the graph.
Hence, the system of the equation doesn't give the solution at (-3, -6).
Learn more about system of equations:
The answer to question 1 is n=-17, and the answer to question 2 is y=-5.8 (<u>could also be seen as -29/8</u>)
Work is shown in the pictures below
