Dependent and Independent Variables Tables and Graphs

What equation represents the relationship between the variables in the table?

• d=10t

• d=t-9

• d=10-t

• d=t+10

Which equation matches the table?

• y = x

• y = 5x

• y = x - 4

• y = x + 4

Samantha needs to raise money (r) for her girl scout troop by selling girl scout cookies (c). Which best describes the variables r and c?

• The variable, r, is the independent variable because it depends on the amount of cookies, c, she sells.

• The variable, c, is the independent variable because it depends on the amount of money raised, r.

• The variable r is the independent variable because it affects the amount of cookies, c, she sells.

• The variable, c, is the independent variable because it affects the amount of money raised, r.

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

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

What is the constant of Proportionality for this table?

• 1/9

• 9

• 8

What is the function of the table?

• y=3x+1

• y=4x-2

• y=x+1

• y=x+7

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither