Graph Proportional Relationships

Does the graph represent a proportional relationship?

• yes

• no

What makes a graph proportional?

• Linear

• The line is only in quadrant 1

• Curvy line

• Straight line and the line goes through the origin

What is the constant of proportionality? Remember to simplify your answer.

What is the constant of proportionality?

The Bountiful Harvest Festival awarded Kimberly and her dad first prize for their garlic fries last year, so they're making them again this year. The key to their success is using fresh potatoes. It takes Kimberly 4 minutes to peel each potato. There is a proportional relationship between the number of potatoes Kimberly peels, x, and the amount of time (in minutes) it takes to peel that many potatoes, y. Graph this relationship. Select two points to draw a line.

A proportional relationship goes through the (a)   . On a graph, this goes through the point ​ (b)   .

• origin

• y intercept

• (0,0)

• (0, y)

• (x,0)

Graph the equation

y=3x

The Bountiful Harvest Festival awarded Kimberly and her dad first prize for their garlic fries last year, so they're making them again this year. The key to their success is using fresh potatoes.

It takes Kimberly 4 minutes to peel each potato.

There is a proportional relationship between the number Kimberly peels, x, and the amount of time (in minutes) it takes to peel that many potatoes, y.

Graph this relationship.

Select two points to draw a line.

The Bountiful Harvest Festival awarded Kimberly and her dad first prize for their garlic fries last year, so they're making them again this year. The key to their success is using fresh potatoes. It takes Kimberly 4 minutes to peel each potato.

There is a proportional relationship between the number of potatoes Kimberly peels, x, and the amount of time (in minutes) it takes to peel that many potatoes, y.

Graph this relationship. Select two points to draw a line.