Answer:
If a vertical line intersects the graph in all places at only one point, then the relation is a function.
If a vertical line intersects the graph in some places at more than one point, then the relation is NOT a function.
The average speed = total distance ÷ total time traveled
The average speed = [500+400] ÷ [10+8]
The average speed = 900 ÷ 18 = 50 miles/hour
88 * 2 = 176 ;
88 * 3 = 264 ;
88 * 4 = 362 ;
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One of the never answered. sad. its D.