8th Math Lesson 3.2.notebook With Answers - 2015 printable pdf download

8th Math Lesson 3.2.notebook With Answers - 2015

8thMathLesson3.2.notebook

October 21, 2015

Bell Ringer

Bell Ringer Answer

Is there a linear relaonship between the retail price and sale price

The relaonship is linear because the rate of change between the

in the table? Is the relaonship proporonal?

sale price and the retail price is a constant value of

½ , and the relaonship is also proporonal because the rao of the

sale price to the retail price is a constant ½ .

Oct 197:49 AM

Sec. 3.1 HW Answers Pg. 175

1) Yes, the rate of change between cost and me for each hour is a

constant $0.03 per hour.

2) No, the rate of change from 1 to 2 seconds is 14.7 m/s, but the rate

Lesson 3.2 Slope

of change from 2 to 3 seconds is 24.5m/s so the rate of change is not

constant

3) Yes, the rate of change between vinegar and oil for each cup of

oil is a constant 3/8 cup vinegar per cup of oil.

4) Yes, the rate of change between water level and me for each

minute is a constant 2 in/min.

5) Yes, the rate of change between the actual distance and the

map distance for each inch on the map is a constant 7.5 mi/in.

6) Yes, the rate of change between the total cost and the number

of people is a constant $15/person.

7) Yes, the rao of cost to me is a constant $0.03 per hour.

8) Yes, the rao of vinegar to oil is a constant 3/8 cup vinegar per

cup of oil.

9) Yes, the rao of actual distance to map distance is a constant

15/2 miles per inch.

Oct 197:49 AM

Oct 197:50 AM

Slope: rao of rise, or vercal change, to the run, or horizontal

Example: A hiking trail rises 6 feet for every horizontal change of 100

change

feet. What is the slope of the trail?

Posive Slope Negave Slope

Oct 197:50 AM

8th Math Lesson 3.2.notebook With Answers - 2015