IXL | Interpret graphs of proportional relationships

Kristen's favorite book is about Johnny Appleseed, the American pioneer who planted apple trees all across the country. Inspired by the story, Kristen plants an apple seed in her backyard and tends the seed as it slowly grows into a tree.

The graph shows the proportional relationship between the age of Kristen's apple tree (in years),

and the height of the tree (in feet),

What does the point

(

)

represent?

When Kristen's apple tree is 10 years old, it is 8 feet tall.

When Kristen's apple tree is 8 years old, it is 10 feet tall.

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Learn with an example

question

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

The graph shows the proportional relationship between the number of hours Pam has charged her flying suit,

and the number of hours she can fly,

What does the point

(

)

represent?

If Pam charged the suit for 8 hours, she can fly for 4 hours.

If Pam charged the suit for 4 hours, she can fly for 8 hours.

solution

The point

(

)

has

x-coordinate

8 and

y-coordinate

In this relationship, x represents the number of hours Pam has charged her flying suit, and y represents the number of hours she can fly. So,

(

)

represents this statement:

If Pam charged the suit for 8 hours, she can fly for 4 hours.

Looking for more? Try these:

Lesson: Proportional relationships

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Lesson: Proportional relationships

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