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2 answers:
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Answer:
This system has one solution (x=2 and y=2), then the answer is A.
Step-by-step explanation:
The system of equations is:
(1)
(2)
Let's multiply the first equation by 2 and subtract it to the second equation
Using this value in (1) we can find y.
Therefore, this system has one solution (x=2 and y=2), the answer is A.
I hope it helps you!
The slope of the line is equal to where angle
is angle of line incline to the positive x-direction.
- When
is acute, then slope is positive;
- When
- When
- When
In your case angle of inclination is obtuse and slope is negative.
Answer: correct choice is B