"Application of a linear function" PPT courseware download

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"Application of a linear function" PPT courseware download

Part One: Warm-up Exercises

1. A car is driving from Nanjing to Shanghai, which is 300 kilometers away. When its average speed is 100 kilometers/hour, which graph below represents the functional relationship between the distance s (kilometers) of the car from Shanghai and the driving time t (hours)? ( )

2. A certain motor vehicle had 42 liters of oil in the tank before departure. After driving for several hours, it refueled with several liters at a gas station on the way. The functional relationship between the remaining oil quantity Q (liters) in the fuel tank and the driving time t (hours) is as shown in the figure. Answer the questions based on the figure below:

(1) Refuel a motor vehicle after driving for _____ hours;

(2) Add _____ liters of fuel halfway;

3. Xiao Ming went for a walk. He walked from home for 20 minutes and arrived at a newsstand 900 meters away from home. After reading the newspaper for 10 minutes, he returned home in 15 minutes. The following can express the relationship between Xiao Ming’s time away from home and distance from home: ( )

Walked 20 minutes from home,

Arriving at a newsstand 900 meters away from home,

After reading the newspaper for 10 minutes,

It took 15 minutes to return home.

PPT on the application of linear functions, part 2: Let’s explore together

A certain kind of weighing scale, the maximum weighing capacity is 150�. When weighing, the weight x (�) and the angle y (°) the pointer rotates clockwise have the following corresponding values:

(1) In the rectangular coordinate system, each pair of corresponding values ​​​​in the above table is the abscissa and ordinate, draw a line connecting the points, and draw the image

(2) Find the analytical formula of the function between y and x, and point out the value range of the independent variable x

(3) When the weight is how many kilograms, the pointer of the scale moves exactly to the 180-degree position? When the weight is 50 kg, through what angle does the pointer of the scale rotate?

PPT on the application of linear functions, the third part: analysis of examples

Example: In order to save water, a certain city has formulated the following water charging standards. Each household uses no more than 8 cubic meters per month. Each cubic meter is charged 1 yuan plus 0.3 yuan for sewage treatment. If the water exceeds 8 cubic meters, the excess water is charged 1.5 yuan per cubic meter. In addition to the sewage treatment fee of 1.2 yuan, it is assumed that a household uses x cubic meters of water per month and the water fee payable is y yuan.

(1) Find the functional relationship expression of y with respect to x;

(2) If a household in this city uses water x=5 cubic meters or x=10 cubic meters in a certain month, calculate the water fee payable;

(3) A household in this city pays a water fee of 26.6 yuan in a certain month. Find the water consumption of this household in this month.

analyze:

(1) When x≤8, charge (1+0.3) yuan per cubic meter

(2) When x>8, the excess part will be charged (1.5+1.2) yuan per cubic meter.

Keywords: Free download of Hebei Education Edition mathematics PPT courseware for eighth grade volume 2, PPT download of application of one-time functions, .PPT format;

For more information about the "Application of a Single Function" PPT courseware, please click on the "Application of a Single Function ppt" tab.

"Application of a Single Function" PPT download:

"Application of a linear function" PPT download Part 1: Teaching objectives: 1. Experience the process of applying a linear function to solve practical problems. 2. Improve the ability to obtain information from text, tables, and images. 3. Understand the relationship between functions and equations through practical problems.

"Application of a linear function" PPT:

"Application of linear functions" PPT Part 1 content: The new lesson introduces A riding a bicycle and driving along the road at a speed of 10 kilometers. Three hours after departure, B riding a motorcycle started from the same place and drove in the same direction as A on the highway, with a speed of 25 kilometers per hour. Suppose A leaves and exits...

"Application of linear functions" PPT courseware 2:

"Application of a linear function" PPT courseware 2 1: Undetermined coefficient method 1. Xiao Ming filled in the following table based on a certain linear function relationship: One of the boxes was accidentally covered by ink. Think about it, the number originally filled in the blank was how many? Explain your reasons. 2.The length of the spring..

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Update Time: 2024-10-03

This template belongs to Mathematics courseware Hebei Education Edition Eighth Grade Mathematics Volume 2 industry PPT template

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