A tugboat goes 180 miles upstream in 10 hours, the return trip downstream takes 5 hours. Find the speed of the tugboat without t
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Answer:
The sum of the x-coordinates of all solutions is -2
Step-by-step explanation:
We are given system of equations as
Firstly, we will isolate x
now, we can plug back in first equation
now, we can solve for y
now, we can find x-values
At y=-5:
At y=5:
At y=-2:
At y=2:
now, we can add all x-coordinate solution values
So,
the sum of the x-coordinates of all solutions is -2