Which equation represents a line which is parallel to the line 2
x
+
7
y
=
21
2x+7y=21?

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segment bisector

step-by-step explanation:

line segment bisector. definition: a line, ray or segment which cuts another line segment into two equal parts. try this drag one of the orange dots at a or b and note the the line ab always divides the line pq into two equal parts.

mark brainliest!