Mon 10/30

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.
• Yes, because it doesn't pass through the origin.
• Yes, because it intersects the y axis.
• No, because it intersects the x axis.

REVIEW QUESTION
Which best describes the graph represented in this table?

•  proportional
• non-proportional

Tags

CCSS.7.RP.A.2B

Is the graph proportional or non proportional?

• proportional
• non proportional

Tags

CCSS.7.RP.A.2D

Is this equation y = 14x showing proportionality?

• yes

• no

Tags

CCSS.8.EE.B.5

Write an equation for this relationship.

• y=18x
• y=18.50x
• y=22.50x
• y=22x

Tags

CCSS.6.EE.C.9

Ross walked 7 miles in 2 hours. What is his unit rate of miles per hour?

• 3.5 miles per hour
• 7/2 miles per hour
• 7.2 miles per hour
• 3 miles per hour

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Mr. Ripple had his students write their own direct variation problem. Three student’s responses are listed below.
S1: Katherine paid $60 for a concert ticket. All tickets are the same price.
S2: Jerome worked for 20.5 hours and told his mom he worked 1,230 minutes.
S3: Maria drove 180 miles in 3 hours at a constant rate of speed.   Based on the three student responses, which of the following is NOT a valid conclusion?

• All three students gave examples of direct variation using 60 for the constant of variation
• All three students wrote proportional relationships and used 60 as the constant of proportionality.
• Each student provided a problem where one quantity varied directly with another quantity with a rate of change of 60
• Each student demonstrated their knowledge of non-proportional relationships and used the number 60 to describe the amount of variance.