Answer:
centroid- the point of concurrency of the <em>medians.</em>
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orthocenter- the point of concurrency of the <em>altitudes.</em>
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circumcenter- the point of concurrency of the <em>perpendicular bisectors.</em>
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hope this helps :)
<span>xy</span>³<span>z</span>²<span> + y</span>²<span>z + xyz =
yz(xy</span>²z + y + x<span>)
Answer: C.</span>
It is -2x because -6 + 4 =-2
The function is constant when the line is horizontal. The values are from 0 to 3.