IM 8.3.1 Practice: Understanding Proportional Relationships

Priya jogs at a constant speed. The relationship between her distance and time is shown on the graph. Diego bikes at a constant speed twice as fast as Priya. Sketch a graph showing the relationship between Diego’s distance and time.

A you-pick blueberry farm offers 6 lbs of blueberries for $16.50. Sketch a graph of the relationship between cost and pounds of blueberries.

[size=150]A line contains the points [math](-4,1)[/math] and [math](4,6)[/math]. Decide whether or not each of these points is also on the line:[/size][br][br][math](0,3.5)[/math][br]

Not on the line On the line

[math](12,11)[/math]

Not on the line On the line

[math](80,50)[/math]

Not on the line[br][br] On the line[br][br]

[math](-1,2.875)[/math]

On the line[br][br] Not on the line[br][br]

[size=150]The points [math](2,-4)[/math], [math](x,y)[/math], [math]A[/math], and [math]B[/math] all lie on the line in the applet below. Find an equation relating [math]x[/math] and [math]y[/math].[/size]

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