Solving and Graphing Proportional Relationships

Which of the following rates of change represents the graph shown?

• 2 boys for every 1 girl

• 0.5 boys for every 1 girl

• 6 boys for every 1 girl

• 3 boys for every 1 girl

Which equation matches the given graph?

• y=0.45x

• y = ²/₅x

• y = 4x

• k = ¼

Which equation shows how much rain falls per hour?

• y = 2x

• y = 3x + 1

• y = -2x

• y = -3x + 1

What is the equation for the graph?

• y = 46x

• y = 46x - 5

• y = 92x

• x = 92y

Write an equation for this situation.

• y = 9.75x

• y = 19.25x + 10

• y = 19.25x

• y = -19.25x

What is the unit rate for the rain fall?

• 2 cm per hour

• 1 cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

All proportional Relationships... (select all correct answers)

• Go through the origin

• compare an x and a y on a graph

• have a constant slope

What is the constant of proportionality?

• 3 feet per minute

• 6 feet per minute

• 1 minute per 3 feet

• 1 minute per 6 feet

What is the slope on the graph? (Look at the graph closely!)

• 2

• 6