Proportions Equations Tables and Graphs

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

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

What is the total cost of tickets if there are 7 adults?

• $600

• $75

• $500

• $525

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

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

A direct variation represents a proportional relationship. Which describes a direct variation? Select All that apply.

• The dog eats 2 cups of food each day

• The tickets cost $8 per ticket plus tax

• Devin runs 5 mph

What is a direct variation?

• a linear relationship

• a proportional linear relationship

• a nonlinear relationship