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# Summary

7th Maths : Term 1 Unit 4 : Direct and Inverse Proportion : Summary

Summary

● A change in one quantity results a corresponding change in other quantity is called proportion.

● Two quantities x and y are said to be in direct proportion with each other if they increase or decrease together in such a way that x/y remains constant.

● Two quantities x and y are said to be in inverse proportion if an increase in x leads to a decrease in y (or vice versa) in such a way that, the product xy remains constant.

ICT Corner

Expected Result is shown in this picture Step 1

Open the Browser type the URL Link given below (or) Scan the QR Code. GeoGebra work sheet named “Direct and Inverse Proportion” will open. There is one activity for Inverse proportion and two videos.

In the activity “Inverse proportion”, Move the slider to change the speed of the car. Click Start button to move the car at desired speed. Observe the time taken when the speed is increased. Step 2

In the second and third page two videos for Direct and inverse proportion are given. Go through the video and compare what you learned from book.