IXL | Rate of change: graphs

Kathleen spent a week at the beach and recorded the number of shells she found each day.

According to the graph, what was the rate of change between Tuesday and Wednesday?

shells per day

ref_doc_title.

Learn with an example

question

Every year Ashland has a citywide relay and reports the winning times.

According to the graph, what was the rate of change between 2023 and 2024?

minutes per year

key idea

Rate of change

change in value

change in time

solution

Plug the numbers into the formula for rate of change and simplify.

Rate of change

change in value

change in time

minutes

–

minutes

2,024

–

2,023

minutes

–

minutes

year

minutes

year

minutes per year

The rate of change between 2023 and 2024 was

minutes per year

Looking for more? Try this:

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	04

SmartScore
out of 100
IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

Teacher tools

Work it out

Not feeling ready yet? These can help:

Z.1Find the slope from a graph

Z.2Find the slope from two points

II.16Interpret line graphs

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!