At the rate of 40 3 \frac{40}{3} 3 4 0 feet per hour, what is an equation we can use for other situations?

40 3 ⋅ h o u r s = f e e t \frac{40}{3}\cdot hours=feet 3 4 0 ⋅ h o u r s = f e e t

40 3 ⋅ f e e t = h o u r s \frac{40}{3}\cdot feet=hours 3 4 0 ⋅ f e e t = h o u r s

Rate of Change Lesson Slides: 4 Slides (8th Grade)

4 Slides • 7 Questions

1

Rate of Change

2

Rate of Change

Time always goes in the denominator
$\frac{amount}{time}$
$rate\cdot time=amount$ is how you can find missing information for other situations with the same rate

3

Multiple Choice

What is the rate of change?

1

$\frac{amount}{time}$

2

$\frac{time}{amount}$

4

Multiple Choice

You paint a house at a rate of 40 square feet every 60 minutes. What is the constant rate?

1

$\frac{40}{60}$

2

$\frac{60}{40}$

5

Multiple Choice

At the rate

\frac{40}{60}

square ft per minute, how can we find missing information for painting a different house at the same rate?

1

$\frac{40}{60}\cdot time=amount\ painted$

2

$\frac{40}{60}\cdot amount\ painted\ =\ time$

6

Multiple Choice

You build a 40 foot fence in 3 hours. If you built it at a constant rate, what is the rate?

1

$\frac{40}{3}$

2

$\frac{3}{40}$

7

Multiple Choice

At the rate of

\frac{40}{3}

feet per hour, what is an equation we can use for other situations?

1

$\frac{40}{3}\cdot hours=feet$

2

$\frac{40}{3}\cdot feet=hours$

8

Open Ended

What does it mean for a rate to be constant?

Type response here

9

Open Ended

Water flows out of a faucet at a constant rate. In 3 minutes, 10.5 gallons come out.

What is the constant rate?

Type response here

10

At a rate of

$\frac{10.5}{3}$ gallons per minute, what equation can we use for other situations?

$rate\cdot time=amount$
$\frac{10.5}{3}\cdot time=amount$

11

$\frac{10.5}{3}\cdot time=amount$
Make a table and graph (OneNote)

Rate of Change

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