IXL | Find the constant of proportionality from a graph

The housekeeping staff at the Weary Traveler Hotel rotates job assignments every day. Today, Jacob is in charge of folding the freshly cleaned bedsheets.

There is a proportional relationship between the amount of time (in

minutes)

Jacob spends folding,

and the number of bedsheets he folds,

What is the constant of proportionality? Write your answer as a whole number or decimal.

bedsheets per minutes

ref_doc_title.

Learn with an example

question

A mysterious flying superhero known as Blue Sky protects the good citizens of Weston. Unknown to these citizens, Blue Sky is actually mild-mannered Jeanette, a scientist in a flying suit. Before Jeanette can fly in the suit, she needs to charge its battery.

There is a proportional relationship between the number of hours Jeanette has charged her flying

suit,

and the number of hours she can

fly,

What is the constant of proportionality? Write your answer as a whole number or decimal.

flight hours per hour charged

key idea

The graph of a proportional relationship is a straight line passing through the origin

(

)

and

have a proportional relationship, the constant of proportionality is the ratio of

solution

To find the constant of proportionality, first identify the coordinates of one of the points on the line.

Calculate the ratio of the

-coordinate

to the

-coordinate.

The constant of proportionality is 1 flight hour per minute charged.

Looking for more? Try these:

Lesson: Constant of proportionality

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

T.4Interpret graphs of proportional relationships

S.11Unit rates

Lesson: Constant of proportionality

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!