Proportionality in Graphs and Tables

What is the constant of proportionality of the table given

• k = 1

• k = 3

• k = 2

• There is not one.

A student studies the same amount of time each day for a test. In 4 days, she studied 60 minutes. Which equation shows this relationship? Let x = the number of days.

• y = 4x

• y = 15x

• y = 60x

• y = 12x 

What was Brian's unit rate?

• 3/2 word per minute

• 35 words per minute

• 60 minutes per word

• 30 words per minute

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

What ordered pair does a direct variation always go through when graphed?

• (0, 0)

• (1, 0)

• (0, 1)

• (1, 1)

Which of the following equations shows a proportional relationship?

• y = -7x - 5

• y = 8x + 2

• y = 7x

• y = -x - 6

Write the equation for the table.

• y = x + 4

• y = 5x

• y = 4x + 1

• y = x + 5

What is the constant of proportionality for the following graph?

• 80

• 20

• 40

• 160

What is the equation that represents this relationship?

• y = 1/12x

• y = 12x

• y = 0.6x

• This is not a proportional relationship.

Based on the graph, Which of the following statements is TRUE?

• I drove 80 miles every 4 hours

• I drove 160 miles in an hour

• I drove 80 miles every 2 hours

• I drove 240 miles in 4 hours