Proportions Graphs Tables Equations

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

A line is linear if it forms a straight line.  The graph has a straight line.  Which best describes this graph?

• linear and nonproportional

• linear and proportional

• nonlinear and nonproportional

• nonlinear and proportional

What is the equation of the line?

• y = 20x

• y = x + 20

• y = 2x

• y = x + 2

You earn $18 for every hour you work. Which equation represents this function?

• y=(18/2)x + 0

• y = 18x

• y = 2x + 18

• y = 18x + 2

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

A Proportion is ___________________

• A complete sentence.

• A grammar sentence stating that two ratios are UNequal.

• A mathematical sentence stating that two ratios are equal.

• A mathematical sentence stating that a ratio are NOT equal.

If an equation is proportional, then it is written in the form....

• y= mx + b

• y = kx

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.

Find the unit rate: $3.60 for 3 pounds of apples.

• $1.00 per pound

• $3.60 per pound

• $1.20 per pound

• $1.10 per pound

What is a direct variation?

• a linear relationship

• a proportional linear relationship

• a nonlinear relationship