"Graphic of a linear function" linear function PPT courseware 3

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"Graphic of a linear function" linear function PPT courseware 3

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"Graphic of a linear function" linear function PPT courseware 3

One day, Xiao Ming went to school at a speed of 80 meters/min. Five minutes after leaving home, Xiao Ming's father found that Xiao Ming did not bring his Chinese books and immediately chased Xiao Ming at a speed of 120 meters/min. What is the distance S between Xiao Ming and his home? ( What is the functional relationship between m) and the departure time t (minutes) of Xiao Ming’s father? Is it a one-time function?

graph of function

Take the values ​​of the independent variable x and the corresponding dependent variable y of a function as the abscissa and ordinate of the point respectively, and draw its corresponding point in the rectangular coordinate system. The graph composed of all these points is called the graph of the function. ).

Do it:

(1) Draw the graph of the linear function y= 2x+5.

(2) Pick several points on the created image, find their abscissa and ordinate, and verify whether they all satisfy the relationship y= 2x+5.

(1) Are the points (x, y) corresponding to x and y that satisfy the relationship y= 2x+5 all on the graph of the linear function y= 2x+5?

(2) Do the points (x, y) on the graph of the linear function y= 2x+5 all satisfy the relationship y= 2x+5?

(3) What are the characteristics of the graph of the linear function y=kx+b?

If y+3 is directly proportional to x-2, and x=1, y=1.

(1) Write the functional relationship between y and x;

(2) Draw the graph of the function;

(3) Find the value of y when x=0 and the value of x when y=0

Among the questions raised previously:

(1) How long does it take for Xiao Ming’s father to catch up with Xiao Ming?

(2) If this problem ends when Xiao Ming’s father catches up with Xiao Ming, can you write down the value range of t?

(3) Please draw the graph of this function;

(4) If S1 (meters) is used to represent the distance between Xiao Ming’s father and home, please write the functional relationship between S1 (meters) and t (minutes); under the conditions of (2), draw this function graph.

Review

(1) There is a one-to-one correspondence between functions and images;

(2) The graph of a proportional function is a straight line passing through the origin, and the graph of a linear function y=kx+b is a straight line passing (0, b).

(3) When making a graph of a function, you can quickly draw the graph by taking only two points.

Keywords: linear function courseware, image courseware of a linear function, Beijing Normal University edition eighth grade mathematics volume PPT courseware, eighth grade mathematics slide courseware download, primary function PPT courseware download, image of a linear function PPT courseware download, .ppt Format

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

"Graphic of a linear function" linear function PPT courseware 5:

"Image of a linear function" linear function PPT courseware 5 Definition of a linear function: If the relationship between two variables x and y can be expressed in the form of (k, b are constants, k0), then y is said to be linear Function where x is the independent variable and y is the dependent variable. In particular, when b=0..

"Graph of a linear function" linear function PPT courseware 4:

"Graph of a linear function" PPT courseware of linear function 4 1. Definition of the graph of a function: Use the values ​​of the independent variable x and the corresponding dependent variable y of a function as the abscissa and ordinate respectively, and draw it in the rectangular coordinate system The corresponding points of , the resulting graph composed of these points is called..

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