Recognising and representing proportional relationships between quantities

What does the slope represent in this situation?

• The sloth runs 1 feet in 3 minutes
• The sloth runs 3 feet in 1 minute
• The sloth runs fast
• The sloth runs 6 feet in 1 minute

A pool is filling up with water at a rate of 25 gallons

per minute. Which graph has a slope that best

represents this rate?

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Write the equation of the graph

A proportional relationship is a ________ that passes through the origin (0, 0)

Which equation has a negative slope?

• y= ¾x + 5
• y= ⅛x - 16
• y= 9 - ½x
• y= -10 + 4x

What makes a graph proportional?

• Curved line

• Curved line that passes through (0,0)

• Straight line that passes through (0,0)

Which line has the equation y = 5/4x + 2

• Line A

• Line B

• Line C

Which graph shows a proportional relationship?

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Find the rate of change.

• $50 per day
• $75 per day
• $25 per day
• $100 per day

Find the slope of the line that passes through:
(10, 1) and (5, 2)

• 1/5
• -1/5
• 5
• -5