"Application of graphs of linear functions" PPT courseware of linear functions

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"Application of graphs of linear functions" PPT courseware of linear functions

Knowledge review:

What information can be obtained from the graph of a linear function?

1. The signs of k and b can be determined from the graph of a linear function;

2. The changing trend of the function can be estimated from the graph of a linear function;

3. It can be directly observed: the corresponding values ​​of x and y;

4. The b value can be determined from the coordinates of the intersection of the graph of the linear function and the y-axis, and the analytical formula of the graph of the linear function can be determined by the undetermined coefficient method.

Due to high temperatures and no rain for days, the relationship between the water storage volume V (10,000 meters3) of a certain reservoir and the drought time t (days) is as follows:

Collaborative inquiry: Are there other ways to answer this question?

(1) Let v=kt+1200

(2) Substitute t=10 and V=1000 into V=kt+1200 to find k= -20V= -20 t+1200

(3) Then substitute the values ​​of each group of t or V to find the values ​​of V and t.

A certain long-distance bus company stipulates that passengers can carry a certain amount of luggage with them. If it exceeds the regulations, they need to purchase a luggage ticket. The relationship between the luggage ticket fee of y yuan and the luggage quality is as follows:

⑴Think about what the purple-red image means?

How many kilograms of luggage can passengers carry for free?

⑵How much yuan do you need to pay per kilogram after it exceeds 30 kilograms?

What did you gain from studying this class?

1. Knowledge: Obtain relevant information through the image of a linear function;

2. Mathematical thinking: ① Combining numbers and shapes, the idea of ​​functions and equations ② Using function images to solve simple practical problems

3. Mathematics ability: initially understand the relationship between equations and functions, and enhance the ability to read pictures and apply them.

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For more information about the "Application of a linear function and a graph of a linear function" PPT courseware, please click the tag "Application of a linear function ppt and the graph of a linear function" ppt.

"Application of graphs of linear functions" PPT courseware of linear functions 5:

"Application of linear function graphs" linear function PPT courseware 5 Scenario introduction Due to continuous high temperature and no rain for days, the water storage capacity of a certain reservoir decreases with the increase of time. The relationship between drought duration t (days) and water storage volume v (10,000 m3) is shown in the figure. Answer the following questions: ..

"Application of graphs of linear functions" PPT courseware of linear functions 4:

"Application of Linear Function Graphs" Linear Function PPT Courseware 4 As shown in the figure, l1 reflects the relationship between the sales revenue and sales volume of a company's products. Fill in the blanks according to the diagram: (1) When the sales volume is 2 tons, the sales volume Income = ______ yuan; (2) When the sales income is 6,000 yuan..

"Application of graphs of linear functions" PPT courseware of linear functions 3:

"Application of the Graph of a Linear Function" Linear Function PPT Courseware 3 In the linear function y=kx+b, when k0, y increases with the increase of x. When b0, the straight line that intersects the y-axis and the positive semi-axis must pass Quadrants one, two and three; when b0, the straight line intersecting the y-axis and the negative semi-axis must pass through quadrants one, three and four...

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Update Time: 2024-09-06

This template belongs to Mathematics courseware Beijing Normal University eighth grade first volume mathematics industry PPT template

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