"Functions and Properties of Direct Proportion" PPT courseware for linear functions

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People's Education Press Eighth Grade Mathematics Volume 1	pptx	6 MB

"Functions and Properties of Direct Proportion" PPT courseware for linear functions

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Upload Time: 2024-09-12

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Description

"Functions and Properties of Direct Proportion" PPT courseware for linear functions

Review and consolidate:

1. Generally, a function of the form y=kx (k is a constant, k≠0) is called a proportional function, where k is called the proportional coefficient.

2. Can you give some examples of proportional functions?

Properties of the graph of proportional function:

Generally, the graph of the proportional function y=kx (k is a constant, k≠0) is a straight line passing through the origin, and we call it the straight line y=kx.

When k>0, the straight line y=kx passes through the first and third quadrants and rises from left to right, that is, as x increases, y also increases;

When k<0, the straight line y=kx passes through the second and fourth quadrants and descends from left to right, that is, as x increases, y decreases.

practise

1. The graph of the function y=0.3x passes through the points (0, ) and (1, ), and y changes with the increase of x;

2. If the function y=mxm+5 is a proportional function, then m=_____, the graph of this function must pass through the _____ quadrant;

3. If the graph of function y=kx (k≠0) passes through point (5,-4), then k=_____;

4. Point A (1, m) is on the graph of function y=2x, then m=_____;

5. When a_____, the straight line y=(1-a)x descends from left to right

Class summary

1. How to draw the graph of a proportional function.

2. The image and properties of the proportional function.

Keywords: linear function courseware, proportional functions and properties courseware, New People's Education Edition eighth grade mathematics PPT courseware, eighth grade mathematics slide courseware download, linear function PPT courseware download, proportional functions and properties PPT courseware download, .ppt Format

For more information about the PPT courseware "Functions and Properties of Proportional Functions of a Linear Function", please click the "Functions and Properties of Proportional Functions ppt ppt" tag.

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Update Time: 2024-09-12

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"Functions and Properties of Direct Proportion" PPT courseware for linear functions