Constant of Proportionality Equations, Graphs, Tables

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

Which of the following equations shows a proportional relationship?

• y = -7x - 5

• y = 8x + 2

• y = 7x

• y = -x - 6

What algebraic equation shows the relationship between the independent and dependent variables?

• y = ax

• y = x + 12

• y = -3x

• y = 

Which equation matches the table?

• y = x 

• y = 5x

• y = x - 4

• y = x + 4

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m=50 + w

• w= 50m

• w= 50 + m

• m= 50 - w

y = x - 6
What is the missing number?

• 12

• 10

• 14

• 13

What is the function of the table?

• y=3x+1

• y=4x-2

• y=x+1

• y=x+7