Lesson 9 Slopes don't have to be positive.

Lesson 9 Slopes don't have to be positive.

​

Multiple Choice

Decide if the slope is positive, zero, or negative.

The plane is cruising at an altitude of 37,000 feet above sea level.

• Positive

• Negative

• Zero

Multiple Choice

Decide if the slope is positive, zero, or negative.

The plane is descending at rate of 1000 feet per minute.

• Positive

• Negative

• Zero

Multiple Choice

Decide if the slope is positive, zero, or negative.

The plane is ascending at a rate of 2000 feet per minute.

• Positive

• Negative

• Zero

Fill in the Blanks

A group of hikers park their car at a trail head and walk into the forest to a campsite. The next morning, they head out on a hike from their campsite walking at a steady rate. The graph shows their distance in miles, d, from the car after h hours of hiking.

How far is the campsite from their car?

Type the number of miles only.

Fill in the Blanks

A group of hikers park their car at a trail head and walk into the forest to a campsite. The next morning, they head out on a hike from their campsite walking at a steady rate. The graph shows their distance in miles, d, from the car after h hours of hiking.

Write an equation that describes the relationship between d and h.

Write the equation in slope intercept form with no spaces between = and + signs.

Fill in the Blanks

A group of hikers park their car at a trail head and walk into the forest to a campsite. The next morning, they head out on a hike from their campsite walking at a steady rate. The graph shows their distance in miles, d, from the car after h hours of hiking.

After how many hours of hiking will they be 16 miles from their car?

Type the number only.

Multiple Select

Select ALL statements that are true.

• Elena makes more money for making 10 calls than Diego makes for washing 10 windows.

• Diego makes more money for washing each window than Elena makes for making each call.

• Elena makes the same amount of money for 20 calls as Diego makes for 18 windows.

• Diego needs to wash 35 windows to make as much money as Elena makes for 40 calls.

• The equation y=x, where y is the number of dollars and x is the number of calls, represents Elena’s situation.

Multiple Choice

What is the slope of the line?

• 4

• $-\frac{1}{4}$

• $\frac{1}{4}$

Multiple Choice

What is the slope of the line?

• 4

• $-\frac{1}{4}$

• $\frac{1}{4}$

Multiple Choice

What is the slope of the line?

• 4

• $-\frac{1}{4}$

• $\frac{1}{4}$