Proportionality Retake Practice

Jimmy was going on vacation. His parents drove the first day and went 390 miles in 6 hours. The next day they drove for 8 hours and went 520 miles. What was their constant rate of speed?

• y = 65x

• y = 60x

• y = 40x

• y = 25x

Tags

CCSS.7.RP.A.2B

Which of the following equations represents the total cost, C, for the number of sandwiches, S, where each sandwich costs $7?

• S = 7c

• S = 7/c

• C = 7s

• C = 7+s

Tags

CCSS.6.EE.C.9

Which equation represents a proportional equation?

• y = kx

• y = mx+b

• y = x

• None of these represent a proportional equation.

Tags

CCSS.7.RP.A.2C

How do you know if a graph is proportional or not?

• The line on the graph is straight.

• The line on the graph goes up.

• The line on the graph starts at (0,0) or the origin.

Tags

CCSS.7.RP.A.2D

Does this graph show a proportional relationship?

• Yes

• No

Tags

CCSS.7.RP.A.2D

Which answer does NOT represent a proportional relationship?

• 
• y = 6x

• 
• y = (1/9)x

Tags

CCSS.7.RP.A.2D

Which best describes the graph represented in this table?

•  proportional
• non-proportional

Tags

CCSS.7.RP.A.2A

What is the constant of proportionality?

• $3
• $4
• $2
• $9

Tags

CCSS.7.RP.A.2B

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

Tags

CCSS.7.RP.A.2D

How do you find the constant of proportionality for a graph?

• Pick a point on the line and use the formula x/y

• Pick a point on the line and use the formula y/x

Tags

CCSS.7.RP.A.2B